49149791492 has 6 divisors (see below), whose sum is σ = 86012135118. Its totient is φ = 24574895744.

The previous prime is 49149791479. The next prime is 49149791497. The reversal of 49149791492 is 29419794194.

It can be written as a sum of positive squares in only one way, i.e., 49086174916 + 63616576 = 221554^2 + 7976^2 .

It is not an unprimeable number, because it can be changed into a prime (49149791497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6143723933 + ... + 6143723940.

It is an arithmetic number, because the mean of its divisors is an integer number (14335355853).

Almost surely, 2^49149791492 is an apocalyptic number.

It is an amenable number.

49149791492 is a deficient number, since it is larger than the sum of its proper divisors (36862343626).

49149791492 is a wasteful number, since it uses less digits than its factorization.

49149791492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12287447877 (or 12287447875 counting only the distinct ones).

The product of its digits is 5878656, while the sum is 59.

The spelling of 49149791492 in words is "forty-nine billion, one hundred forty-nine million, seven hundred ninety-one thousand, four hundred ninety-two".