159781494 has 16 divisors (see below), whose sum is σ = 322080768. Its totient is φ = 52840872.

The previous prime is 159781493. The next prime is 159781541. The reversal of 159781494 is 494187951.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159781493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104082 + ... + 105605.

It is an arithmetic number, because the mean of its divisors is an integer number (20130048).

Almost surely, 2^159781494 is an apocalyptic number.

159781494 is an abundant number, since it is smaller than the sum of its proper divisors (162299274).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

159781494 is a wasteful number, since it uses less digits than its factorization.

159781494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209819.

The product of its digits is 362880, while the sum is 48.

The square root of 159781494 is about 12640.4704817503. The cubic root of 159781494 is about 542.6362788441.

The spelling of 159781494 in words is "one hundred fifty-nine million, seven hundred eighty-one thousand, four hundred ninety-four".