2097356940 has 72 divisors (see below), whose sum is σ = 7270841760. Its totient is φ = 479395584.

The previous prime is 2097356897. The next prime is 2097356983. The reversal of 2097356940 is 496537902.

It is a happy number.

2097356940 is a `hidden beast` number, since 209 + 7 + 356 + 94 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (2097356897) and next prime (2097356983).

It is a super-2 number, since 2×2097356940² = 8797812267532327200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 831025 + ... + 833544.

Almost surely, 2^2097356940 is an apocalyptic number.

2097356940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2097356940 is an abundant number, since it is smaller than the sum of its proper divisors (5173484820).

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

2097356940 is a wasteful number, since it uses less digits than its factorization.

2097356940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1664591 (or 1664586 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 45.

The square root of 2097356940 is about 45796.9097210718. The cubic root of 2097356940 is about 1280.0416937916.

The spelling of 2097356940 in words is "two billion, ninety-seven million, three hundred fifty-six thousand, nine hundred forty".