162087491 has 8 divisors (see below), whose sum is σ = 167394864. Its totient is φ = 156828960.

The previous prime is 162087481. The next prime is 162087493. The reversal of 162087491 is 194780261.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 162087491 - 2⁶ = 162087427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (162087493) 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 in 7 ways as a sum of consecutive naturals, for example, 5405 + ... + 18798.

It is an arithmetic number, because the mean of its divisors is an integer number (20924358).

Almost surely, 2^162087491 is an apocalyptic number.

162087491 is a deficient number, since it is larger than the sum of its proper divisors (5307373).

162087491 is a wasteful number, since it uses less digits than its factorization.

162087491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24421.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 162087491 is about 12731.3585685111. The cubic root of 162087491 is about 545.2342970386.

The spelling of 162087491 in words is "one hundred sixty-two million, eighty-seven thousand, four hundred ninety-one".