2601491904 has 392 divisors, whose sum is σ = 8735098608. Its totient is φ = 761425920.

The previous prime is 2601491887. The next prime is 2601491917. The reversal of 2601491904 is 4091941062.

It is a happy number.

2601491904 is a `hidden beast` number, since 2 + 601 + 49 + 1 + 9 + 0 + 4 = 666.

2601491904 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 18988924 + ... + 18989060.

Almost surely, 2^2601491904 is an apocalyptic number.

2601491904 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2601491904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4367549304).

2601491904 is an abundant number, since it is smaller than the sum of its proper divisors (6133606704).

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

2601491904 is a wasteful number, since it uses less digits than its factorization.

2601491904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215 (or 190 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 2601491904 is about 51004.8223602435. The cubic root of 2601491904 is about 1375.3318258541.

The spelling of 2601491904 in words is "two billion, six hundred one million, four hundred ninety-one thousand, nine hundred four".