7489861605 has 24 divisors (see below), whose sum is σ = 12990751488. Its totient is φ = 3992031456.

The previous prime is 7489861553. The next prime is 7489861619. The reversal of 7489861605 is 5061689847.

It is not a de Polignac number, because 7489861605 - 2²⁷ = 7355643877 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18664 + ... + 123806.

It is an arithmetic number, because the mean of its divisors is an integer number (541281312).

Almost surely, 2^7489861605 is an apocalyptic number.

It is an amenable number.

7489861605 is a deficient number, since it is larger than the sum of its proper divisors (5500889883).

7489861605 is a wasteful number, since it uses less digits than its factorization.

7489861605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106737 (or 106734 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The square root of 7489861605 is about 86543.9865328608. The cubic root of 7489861605 is about 1956.5514123110.

It can be divided in two parts, 74898 and 61605, that added together give a triangular number (136503 = T₅₂₂).

The spelling of 7489861605 in words is "seven billion, four hundred eighty-nine million, eight hundred sixty-one thousand, six hundred five".