901611749 has 8 divisors (see below), whose sum is σ = 911570328. Its totient is φ = 891673600.

The previous prime is 901611691. The next prime is 901611761. The reversal of 901611749 is 947116109.

It can be written as a sum of positive squares in 4 ways, for example, as 295221124 + 606390625 = 17182^2 + 24625^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 901611749 - 2⁸ = 901611493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (901611149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94109 + ... + 103245.

It is an arithmetic number, because the mean of its divisors is an integer number (113946291).

Almost surely, 2^901611749 is an apocalyptic number.

It is an amenable number.

901611749 is a deficient number, since it is larger than the sum of its proper divisors (9958579).

901611749 is a wasteful number, since it uses less digits than its factorization.

901611749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10215.

The product of its (nonzero) digits is 13608, while the sum is 38.

The square root of 901611749 is about 30026.8504675399. The cubic root of 901611749 is about 966.0653840696.

The spelling of 901611749 in words is "nine hundred one million, six hundred eleven thousand, seven hundred forty-nine".