162133891 has 2 divisors, whose sum is σ = 162133892. Its totient is φ = 162133890.

The previous prime is 162133861. The next prime is 162133901. The reversal of 162133891 is 198331261.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 162133891 - 2¹³ = 162125699 is a prime.

It is a super-2 number, since 2×162133891² = 52574797221599762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (162133801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81066945 + 81066946.

It is an arithmetic number, because the mean of its divisors is an integer number (81066946).

Almost surely, 2^162133891 is an apocalyptic number.

162133891 is a deficient number, since it is larger than the sum of its proper divisors (1).

162133891 is an equidigital number, since it uses as much as digits as its factorization.

162133891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 34.

The square root of 162133891 is about 12733.1807102546. The cubic root of 162133891 is about 545.2863192675.

The spelling of 162133891 in words is "one hundred sixty-two million, one hundred thirty-three thousand, eight hundred ninety-one".