162381491 has 2 divisors, whose sum is σ = 162381492. Its totient is φ = 162381490.

The previous prime is 162381487. The next prime is 162381517. The reversal of 162381491 is 194183261.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 162381491 - 2² = 162381487 is a prime.

It is a Chen prime.

It is a plaindrome in base 14.

It is not a weakly prime, because it can be changed into another prime (162381421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81190745 + 81190746.

It is an arithmetic number, because the mean of its divisors is an integer number (81190746).

Almost surely, 2^162381491 is an apocalyptic number.

162381491 is a deficient number, since it is larger than the sum of its proper divisors (1).

162381491 is an equidigital number, since it uses as much as digits as its factorization.

162381491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 35.

The square root of 162381491 is about 12742.8996307748. The cubic root of 162381491 is about 545.5637529830.

The spelling of 162381491 in words is "one hundred sixty-two million, three hundred eighty-one thousand, four hundred ninety-one".