2403438156 has 144 divisors (see below), whose sum is σ = 7395804416. Its totient is φ = 668067264.

The previous prime is 2403438083. The next prime is 2403438179. The reversal of 2403438156 is 6518343042.

2403438156 is a `hidden beast` number, since 240 + 34 + 381 + 5 + 6 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2403438156.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 246975 + ... + 256521.

Almost surely, 2^2403438156 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2403438156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3697902208).

2403438156 is an abundant number, since it is smaller than the sum of its proper divisors (4992366260).

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

2403438156 is a wasteful number, since it uses less digits than its factorization.

2403438156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9610 (or 9596 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 2403438156 is about 49024.8728300237. The cubic root of 2403438156 is about 1339.5049325857.

The spelling of 2403438156 in words is "two billion, four hundred three million, four hundred thirty-eight thousand, one hundred fifty-six".