2137694920 has 128 divisors (see below), whose sum is σ = 5200588800. Its totient is φ = 787968000.

The previous prime is 2137694917. The next prime is 2137694953. The reversal of 2137694920 is 294967312.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11192025 + ... + 11192215.

It is an arithmetic number, because the mean of its divisors is an integer number (40629600).

Almost surely, 2^2137694920 is an apocalyptic number.

2137694920 is a gapful number since it is divisible by the number (20) 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 2137694920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2600294400).

2137694920 is an abundant number, since it is smaller than the sum of its proper divisors (3062893880).

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

2137694920 is a wasteful number, since it uses less digits than its factorization.

2137694920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479 (or 475 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 2137694920 is about 46235.2129875055. The cubic root of 2137694920 is about 1288.1958876095.

The spelling of 2137694920 in words is "two billion, one hundred thirty-seven million, six hundred ninety-four thousand, nine hundred twenty".