157346989 has 4 divisors (see below), whose sum is σ = 157376860. Its totient is φ = 157317120.

The previous prime is 157346957. The next prime is 157346993. The reversal of 157346989 is 989643751.

It is a happy number.

157346989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 56746089 + 100600900 = 7533^2 + 10030^2 .

It is a cyclic number.

It is not a de Polignac number, because 157346989 - 2⁵ = 157346957 is a prime.

It is a super-2 number, since 2×157346989² = 49516149894732242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157346909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4692 + ... + 18349.

It is an arithmetic number, because the mean of its divisors is an integer number (39344215).

Almost surely, 2^157346989 is an apocalyptic number.

It is an amenable number.

157346989 is a deficient number, since it is larger than the sum of its proper divisors (29871).

157346989 is an equidigital number, since it uses as much as digits as its factorization.

157346989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29870.

The product of its digits is 1632960, while the sum is 52.

The square root of 157346989 is about 12543.8028125445. The cubic root of 157346989 is about 539.8662094245.

The spelling of 157346989 in words is "one hundred fifty-seven million, three hundred forty-six thousand, nine hundred eighty-nine".