137856379 has 2 divisors, whose sum is σ = 137856380. Its totient is φ = 137856378.

The previous prime is 137856371. The next prime is 137856403. The reversal of 137856379 is 973658731.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 137856379 - 2³ = 137856371 is a prime.

It is not a weakly prime, because it can be changed into another prime (137856371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68928189 + 68928190.

It is an arithmetic number, because the mean of its divisors is an integer number (68928190).

Almost surely, 2^137856379 is an apocalyptic number.

137856379 is a deficient number, since it is larger than the sum of its proper divisors (1).

137856379 is an equidigital number, since it uses as much as digits as its factorization.

137856379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 952560, while the sum is 49.

The square root of 137856379 is about 11741.2256174558. The cubic root of 137856379 is about 516.5855917645.

It can be divided in two parts, 13785 and 6379, that added together give a square (20164 = 142²).

The spelling of 137856379 in words is "one hundred thirty-seven million, eight hundred fifty-six thousand, three hundred seventy-nine".