537199969 has 2 divisors, whose sum is σ = 537199970. Its totient is φ = 537199968.

The previous prime is 537199951. The next prime is 537200009. The reversal of 537199969 is 969991735.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 470369344 + 66830625 = 21688^2 + 8175^2 .

It is a cyclic number.

It is not a de Polignac number, because 537199969 - 2²¹ = 535102817 is a prime.

It is a super-2 number, since 2×537199969² = 577167613387201922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (537199909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 268599984 + 268599985.

It is an arithmetic number, because the mean of its divisors is an integer number (268599985).

Almost surely, 2^537199969 is an apocalyptic number.

It is an amenable number.

537199969 is a deficient number, since it is larger than the sum of its proper divisors (1).

537199969 is an equidigital number, since it uses as much as digits as its factorization.

537199969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4133430, while the sum is 58.

The square root of 537199969 is about 23177.5747005592. The cubic root of 537199969 is about 812.9153538342.

The spelling of 537199969 in words is "five hundred thirty-seven million, one hundred ninety-nine thousand, nine hundred sixty-nine".