7371991689 has 8 divisors (see below), whose sum is σ = 10038456960. Its totient is φ = 4810093776.

The previous prime is 7371991667. The next prime is 7371991723. The reversal of 7371991689 is 9861991737.

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

It is not a de Polignac number, because 7371991689 - 2⁸ = 7371991433 is a prime.

It is a super-2 number, since 2×7371991689² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7371991489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26141674 + ... + 26141955.

It is an arithmetic number, because the mean of its divisors is an integer number (1254807120).

Almost surely, 2^7371991689 is an apocalyptic number.

It is an amenable number.

7371991689 is a deficient number, since it is larger than the sum of its proper divisors (2666465271).

7371991689 is a wasteful number, since it uses less digits than its factorization.

7371991689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52283679.

The product of its digits is 5143824, while the sum is 60.

The square root of 7371991689 is about 85860.3033362916. The cubic root of 7371991689 is about 1946.2335088026.

The spelling of 7371991689 in words is "seven billion, three hundred seventy-one million, nine hundred ninety-one thousand, six hundred eighty-nine".