2100556156 has 24 divisors (see below), whose sum is σ = 3897117056. Its totient is φ = 988925760.

The previous prime is 2100556141. The next prime is 2100556163. The reversal of 2100556156 is 6516550012.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224331 + ... + 233506.

Almost surely, 2^2100556156 is an apocalyptic number.

It is an amenable number.

2100556156 is a deficient number, since it is larger than the sum of its proper divisors (1796560900).

2100556156 is a wasteful number, since it uses less digits than its factorization.

2100556156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457909 (or 457907 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 31.

The square root of 2100556156 is about 45831.8247072926. The cubic root of 2100556156 is about 1280.6922029118.

The spelling of 2100556156 in words is "two billion, one hundred million, five hundred fifty-six thousand, one hundred fifty-six".