156045389 has 2 divisors, whose sum is σ = 156045390. Its totient is φ = 156045388.

The previous prime is 156045343. The next prime is 156045419. The reversal of 156045389 is 983540651.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 145612489 + 10432900 = 12067^2 + 3230^2 .

It is a cyclic number.

It is not a de Polignac number, because 156045389 - 2¹⁶ = 155979853 is a prime.

It is a super-2 number, since 2×156045389² = 48700326856322642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (156045319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78022694 + 78022695.

It is an arithmetic number, because the mean of its divisors is an integer number (78022695).

Almost surely, 2^156045389 is an apocalyptic number.

It is an amenable number.

156045389 is a deficient number, since it is larger than the sum of its proper divisors (1).

156045389 is an equidigital number, since it uses as much as digits as its factorization.

156045389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129600, while the sum is 41.

The square root of 156045389 is about 12491.8128788419. The cubic root of 156045389 is about 538.3734652566.

The spelling of 156045389 in words is "one hundred fifty-six million, forty-five thousand, three hundred eighty-nine".