2629661900 has 18 divisors (see below), whose sum is σ = 5706366540. Its totient is φ = 1051864720.

The previous prime is 2629661897. The next prime is 2629661927. The reversal of 2629661900 is 91669262.

It is a super-2 number, since 2×2629661900² = 13830243416623220000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13148210 + ... + 13148409.

Almost surely, 2^2629661900 is an apocalyptic number.

2629661900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2629661900 is an abundant number, since it is smaller than the sum of its proper divisors (3076704640).

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

2629661900 is a wasteful number, since it uses less digits than its factorization.

2629661900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26296633 (or 26296626 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 41.

The square root of 2629661900 is about 51280.2291336534. The cubic root of 2629661900 is about 1380.2782292751.

The spelling of 2629661900 in words is "two billion, six hundred twenty-nine million, six hundred sixty-one thousand, nine hundred".