156240893 has 4 divisors (see below), whose sum is σ = 161628540. Its totient is φ = 150853248.

The previous prime is 156240883. The next prime is 156240911. The reversal of 156240893 is 398042651.

It is a happy number.

156240893 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, and also an emirpimes, since its reverse is a distinct semiprime: 398042651 = 1607 ⋅247693.

It can be written as a sum of positive squares in 2 ways, for example, as 133564249 + 22676644 = 11557^2 + 4762^2 .

It is a cyclic number.

It is not a de Polignac number, because 156240893 - 2¹⁸ = 155978749 is a prime.

It is a super-2 number, since 2×156240893² = 48822433290874898, 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 (156240823) 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, 2693780 + ... + 2693837.

It is an arithmetic number, because the mean of its divisors is an integer number (40407135).

Almost surely, 2^156240893 is an apocalyptic number.

It is an amenable number.

156240893 is a deficient number, since it is larger than the sum of its proper divisors (5387647).

156240893 is an equidigital number, since it uses as much as digits as its factorization.

156240893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5387646.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 156240893 is about 12499.6357146918. The cubic root of 156240893 is about 538.5982080717.

The spelling of 156240893 in words is "one hundred fifty-six million, two hundred forty thousand, eight hundred ninety-three".