145699146 has 48 divisors (see below), whose sum is σ = 335544768. Its totient is φ = 45532800.

The previous prime is 145699139. The next prime is 145699157. The reversal of 145699146 is 641996541.

It is a happy number.

It is a super-2 number, since 2×145699146² = 42456482290258632, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 94401 + ... + 95931.

It is an arithmetic number, because the mean of its divisors is an integer number (6990516).

Almost surely, 2^145699146 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145699146, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167772384).

145699146 is an abundant number, since it is smaller than the sum of its proper divisors (189845622).

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

145699146 is a wasteful number, since it uses less digits than its factorization.

145699146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1867 (or 1864 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 145699146 is about 12070.5901264188. The cubic root of 145699146 is about 526.2018073196.

The spelling of 145699146 in words is "one hundred forty-five million, six hundred ninety-nine thousand, one hundred forty-six".