49131531490 has 8 divisors (see below), whose sum is σ = 88436756700. Its totient is φ = 19652612592.

The previous prime is 49131531481. The next prime is 49131531521. The reversal of 49131531490 is 9413513194.

It can be written as a sum of positive squares in 2 ways, for example, as 47730451729 + 1401079761 = 218473^2 + 37431^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2456576565 + ... + 2456576584.

Almost surely, 2^49131531490 is an apocalyptic number.

49131531490 is a deficient number, since it is larger than the sum of its proper divisors (39305225210).

49131531490 is a wasteful number, since it uses less digits than its factorization.

49131531490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4913153156.

The product of its (nonzero) digits is 58320, while the sum is 40.

The spelling of 49131531490 in words is "forty-nine billion, one hundred thirty-one million, five hundred thirty-one thousand, four hundred ninety".