2137423778 has 16 divisors (see below), whose sum is σ = 3667270464. Its totient is φ = 915259920.

The previous prime is 2137423709. The next prime is 2137423789. The reversal of 2137423778 is 8773247312.

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, 47693 + ... + 80928.

It is an arithmetic number, because the mean of its divisors is an integer number (229204404).

Almost surely, 2^2137423778 is an apocalyptic number.

2137423778 is a deficient number, since it is larger than the sum of its proper divisors (1529846686).

2137423778 is a wasteful number, since it uses less digits than its factorization.

2137423778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129817.

The product of its digits is 395136, while the sum is 44.

The square root of 2137423778 is about 46232.2806921744. The cubic root of 2137423778 is about 1288.1414210320.

The spelling of 2137423778 in words is "two billion, one hundred thirty-seven million, four hundred twenty-three thousand, seven hundred seventy-eight".