1653849740 has 12 divisors (see below), whose sum is σ = 3473084496. Its totient is φ = 661539888.

The previous prime is 1653849719. The next prime is 1653849749. The reversal of 1653849740 is 479483561.

It is not an unprimeable number, because it can be changed into a prime (1653849749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41346224 + ... + 41346263.

It is an arithmetic number, because the mean of its divisors is an integer number (289423708).

Almost surely, 2^1653849740 is an apocalyptic number.

1653849740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1653849740 is an abundant number, since it is smaller than the sum of its proper divisors (1819234756).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1653849740 is a wasteful number, since it uses less digits than its factorization.

1653849740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82692496 (or 82692494 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 47.

The square root of 1653849740 is about 40667.5514384626. The cubic root of 1653849740 is about 1182.5840479484.

The spelling of 1653849740 in words is "one billion, six hundred fifty-three million, eight hundred forty-nine thousand, seven hundred forty".