83649194739 has 144 divisors (see below), whose sum is σ = 149437884960. Its totient is φ = 44813260800.

The previous prime is 83649194737. The next prime is 83649194771. The reversal of 83649194739 is 93749194638.

It is not a de Polignac number, because 83649194739 - 2¹ = 83649194737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (83649194731) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 19862344 + ... + 19866554.

It is an arithmetic number, because the mean of its divisors is an integer number (1037763090).

Almost surely, 2^83649194739 is an apocalyptic number.

83649194739 is a deficient number, since it is larger than the sum of its proper divisors (65788690221).

83649194739 is a wasteful number, since it uses less digits than its factorization.

83649194739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4322 (or 4308 counting only the distinct ones).

The product of its digits is 35271936, while the sum is 63.

The spelling of 83649194739 in words is "eighty-three billion, six hundred forty-nine million, one hundred ninety-four thousand, seven hundred thirty-nine".