390154157 has 2 divisors, whose sum is σ = 390154158. Its totient is φ = 390154156.

The previous prime is 390154133. The next prime is 390154181. The reversal of 390154157 is 751451093.

It is a balanced prime because it is at equal distance from previous prime (390154133) and next prime (390154181).

It can be written as a sum of positive squares in only one way, i.e., 241460521 + 148693636 = 15539^2 + 12194^2 .

It is a cyclic number.

It is not a de Polignac number, because 390154157 - 2²² = 385959853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (390154357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195077078 + 195077079.

It is an arithmetic number, because the mean of its divisors is an integer number (195077079).

Almost surely, 2^390154157 is an apocalyptic number.

It is an amenable number.

390154157 is a deficient number, since it is larger than the sum of its proper divisors (1).

390154157 is an equidigital number, since it uses as much as digits as its factorization.

390154157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18900, while the sum is 35.

The square root of 390154157 is about 19752.3202940819. The cubic root of 390154157 is about 730.7106090994.

The spelling of 390154157 in words is "three hundred ninety million, one hundred fifty-four thousand, one hundred fifty-seven".