157881943 has 2 divisors, whose sum is σ = 157881944. Its totient is φ = 157881942.

The previous prime is 157881931. The next prime is 157881947. The reversal of 157881943 is 349188751.

It is a happy number.

157881943 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 157881943 - 2²¹ = 155784791 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 157881893 and 157881902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157881947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78940971 + 78940972.

It is an arithmetic number, because the mean of its divisors is an integer number (78940972).

Almost surely, 2^157881943 is an apocalyptic number.

157881943 is a deficient number, since it is larger than the sum of its proper divisors (1).

157881943 is an equidigital number, since it uses as much as digits as its factorization.

157881943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 46.

The square root of 157881943 is about 12565.1081571151. The cubic root of 157881943 is about 540.4773362761.

It can be divided in two parts, 1578 and 81943, that added together give a 4-th power (83521 = 17⁴).

The spelling of 157881943 in words is "one hundred fifty-seven million, eight hundred eighty-one thousand, nine hundred forty-three".