2137972247 has 16 divisors (see below), whose sum is σ = 2212987392. Its totient is φ = 2064491520.

The previous prime is 2137972231. The next prime is 2137972271. The reversal of 2137972247 is 7422797312.

It is a cyclic number.

It is not a de Polignac number, because 2137972247 - 2⁴ = 2137972231 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2137972198 and 2137972207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2137972297) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1011722 + ... + 1013832.

It is an arithmetic number, because the mean of its divisors is an integer number (138311712).

Almost surely, 2^2137972247 is an apocalyptic number.

2137972247 is a deficient number, since it is larger than the sum of its proper divisors (75015145).

2137972247 is a wasteful number, since it uses less digits than its factorization.

2137972247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2458.

The product of its digits is 296352, while the sum is 44.

The square root of 2137972247 is about 46238.2119788385. The cubic root of 2137972247 is about 1288.2515918558.

The spelling of 2137972247 in words is "two billion, one hundred thirty-seven million, nine hundred seventy-two thousand, two hundred forty-seven".