137919863 has 2 divisors, whose sum is σ = 137919864. Its totient is φ = 137919862.

The previous prime is 137919857. The next prime is 137919871. The reversal of 137919863 is 368919731.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (368919731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 137919863 - 2¹⁸ = 137657719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137918863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68959931 + 68959932.

It is an arithmetic number, because the mean of its divisors is an integer number (68959932).

Almost surely, 2^137919863 is an apocalyptic number.

137919863 is a deficient number, since it is larger than the sum of its proper divisors (1).

137919863 is an equidigital number, since it uses as much as digits as its factorization.

137919863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 244944, while the sum is 47.

The square root of 137919863 is about 11743.9287719230. The cubic root of 137919863 is about 516.6648769044.

The spelling of 137919863 in words is "one hundred thirty-seven million, nine hundred nineteen thousand, eight hundred sixty-three".