37620434387 has 2 divisors, whose sum is σ = 37620434388. Its totient is φ = 37620434386.

The previous prime is 37620434377. The next prime is 37620434429. The reversal of 37620434387 is 78343402673.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 37620434387 - 2³⁴ = 20440565203 is a prime.

It is not a weakly prime, because it can be changed into another prime (37620434377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18810217193 + 18810217194.

It is an arithmetic number, because the mean of its divisors is an integer number (18810217194).

Almost surely, 2^37620434387 is an apocalyptic number.

37620434387 is a deficient number, since it is larger than the sum of its proper divisors (1).

37620434387 is an equidigital number, since it uses as much as digits as its factorization.

37620434387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2032128, while the sum is 47.

The spelling of 37620434387 in words is "thirty-seven billion, six hundred twenty million, four hundred thirty-four thousand, three hundred eighty-seven".