852137389 has 2 divisors, whose sum is σ = 852137390. Its totient is φ = 852137388.

The previous prime is 852137383. The next prime is 852137443. The reversal of 852137389 is 983731258.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 786802500 + 65334889 = 28050^2 + 8083^2 .

It is a cyclic number.

It is not a de Polignac number, because 852137389 - 2³ = 852137381 is a prime.

It is a super-2 number, since 2×852137389² = 1452276259463474642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (852137381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 426068694 + 426068695.

It is an arithmetic number, because the mean of its divisors is an integer number (426068695).

Almost surely, 2^852137389 is an apocalyptic number.

It is an amenable number.

852137389 is a deficient number, since it is larger than the sum of its proper divisors (1).

852137389 is an equidigital number, since it uses as much as digits as its factorization.

852137389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 46.

The square root of 852137389 is about 29191.3923785763. The cubic root of 852137389 is about 948.0615650315.

The spelling of 852137389 in words is "eight hundred fifty-two million, one hundred thirty-seven thousand, three hundred eighty-nine".