157470389 has 2 divisors, whose sum is σ = 157470390. Its totient is φ = 157470388.

The previous prime is 157470373. The next prime is 157470427. The reversal of 157470389 is 983074751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 145684900 + 11785489 = 12070^2 + 3433^2 .

It is an emirp because it is prime and its reverse (983074751) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 157470389 - 2⁴ = 157470373 is a prime.

It is a super-2 number, since 2×157470389² = 49593846823622642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157470329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78735194 + 78735195.

It is an arithmetic number, because the mean of its divisors is an integer number (78735195).

Almost surely, 2^157470389 is an apocalyptic number.

It is an amenable number.

157470389 is a deficient number, since it is larger than the sum of its proper divisors (1).

157470389 is an equidigital number, since it uses as much as digits as its factorization.

157470389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 157470389 is about 12548.7206120783. The cubic root of 157470389 is about 540.0073032849.

The spelling of 157470389 in words is "one hundred fifty-seven million, four hundred seventy thousand, three hundred eighty-nine".