39151349689 has 9 divisors (see below), whose sum is σ = 40553893263. Its totient is φ = 37795762872.

The previous prime is 39151349663. The next prime is 39151349693. The reversal of 39151349689 is 98694315193.

It is a happy number.

The square root of 39151349689 is 197867.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 20530018089 + 18621331600 = 143283^2 + 136460^2 .

It is not a de Polignac number, because 39151349689 - 2⁹ = 39151349177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39151349609) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5734732 + ... + 5741554.

Almost surely, 2^39151349689 is an apocalyptic number.

39151349689 is the 197867-th square number.

39151349689 is the 98934-th centered octagonal number.

It is an amenable number.

39151349689 is a deficient number, since it is larger than the sum of its proper divisors (1402543574).

39151349689 is an frugal number, since it uses more digits than its factorization.

39151349689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13704 (or 6852 counting only the distinct ones).

The product of its digits is 6298560, while the sum is 58.

The spelling of 39151349689 in words is "thirty-nine billion, one hundred fifty-one million, three hundred forty-nine thousand, six hundred eighty-nine".