612101490 has 384 divisors, whose sum is σ = 2123573760. Its totient is φ = 109486080.

The previous prime is 612101453. The next prime is 612101491. The reversal of 612101490 is 94101216.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 612101490.

It is not an unprimeable number, because it can be changed into a prime (612101491) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 5615556 + ... + 5615664.

It is an arithmetic number, because the mean of its divisors is an integer number (5530140).

Almost surely, 2^612101490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 612101490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1061786880).

612101490 is an abundant number, since it is smaller than the sum of its proper divisors (1511472270).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

612101490 is a wasteful number, since it uses less digits than its factorization.

612101490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178 (or 167 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 612101490 is about 24740.6849137206. The cubic root of 612101490 is about 849.0654041381.

The spelling of 612101490 in words is "six hundred twelve million, one hundred one thousand, four hundred ninety".