489157042090 has 16 divisors (see below), whose sum is σ = 910844147880. Its totient is φ = 188915823040.

The previous prime is 489157042081. The next prime is 489157042097. The reversal of 489157042090 is 90240751984.

It can be written as a sum of positive squares in 4 ways, for example, as 320649255081 + 168507787009 = 566259^2 + 410497^2 .

It is a super-2 number, since 2×489157042090² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (489157042097) 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, 843373921 + ... + 843374500.

Almost surely, 2^489157042090 is an apocalyptic number.

489157042090 is a deficient number, since it is larger than the sum of its proper divisors (421687105790).

489157042090 is a wasteful number, since it uses less digits than its factorization.

489157042090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1686748457.

The product of its (nonzero) digits is 725760, while the sum is 49.

The spelling of 489157042090 in words is "four hundred eighty-nine billion, one hundred fifty-seven million, forty-two thousand, ninety".