537138769 has 2 divisors, whose sum is σ = 537138770. Its totient is φ = 537138768.

The previous prime is 537138739. The next prime is 537138781. The reversal of 537138769 is 967831735.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 472497169 + 64641600 = 21737^2 + 8040^2 .

It is a cyclic number.

It is not a de Polignac number, because 537138769 - 2⁵ = 537138737 is a prime.

It is a super-2 number, since 2×537138769² = 577036114325670722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (537138739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 268569384 + 268569385.

It is an arithmetic number, because the mean of its divisors is an integer number (268569385).

Almost surely, 2^537138769 is an apocalyptic number.

It is an amenable number.

537138769 is a deficient number, since it is larger than the sum of its proper divisors (1).

537138769 is an equidigital number, since it uses as much as digits as its factorization.

537138769 is an evil number, because the sum of its binary digits is even.

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

The square root of 537138769 is about 23176.2544212821. The cubic root of 537138769 is about 812.8844824567.

The spelling of 537138769 in words is "five hundred thirty-seven million, one hundred thirty-eight thousand, seven hundred sixty-nine".