172348369 has 2 divisors, whose sum is σ = 172348370. Its totient is φ = 172348368.

The previous prime is 172348357. The next prime is 172348409. The reversal of 172348369 is 963843271.

172348369 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 145515969 + 26832400 = 12063^2 + 5180^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172348369 is a prime.

It is a super-2 number, since 2×172348369² = 59407920593920322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (172348349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86174184 + 86174185.

It is an arithmetic number, because the mean of its divisors is an integer number (86174185).

Almost surely, 2^172348369 is an apocalyptic number.

It is an amenable number.

172348369 is a deficient number, since it is larger than the sum of its proper divisors (1).

172348369 is an equidigital number, since it uses as much as digits as its factorization.

172348369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 43.

The square root of 172348369 is about 13128.1517739551. The cubic root of 172348369 is about 556.5049854154.

The spelling of 172348369 in words is "one hundred seventy-two million, three hundred forty-eight thousand, three hundred sixty-nine".