1653845634 has 32 divisors (see below), whose sum is σ = 4200243840. Its totient is φ = 472527216.

The previous prime is 1653845597. The next prime is 1653845749. The reversal of 1653845634 is 4365483561.

1653845634 is a `hidden beast` number, since 1 + 6 + 5 + 3 + 8 + 4 + 5 + 634 = 666.

It is a super-2 number, since 2×1653845634² = 5470410762201723912, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1653845634.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2187249 + ... + 2188004.

It is an arithmetic number, because the mean of its divisors is an integer number (131257620).

Almost surely, 2^1653845634 is an apocalyptic number.

1653845634 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1653845634 is an abundant number, since it is smaller than the sum of its proper divisors (2546398206).

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

1653845634 is a wasteful number, since it uses less digits than its factorization.

1653845634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4375271 (or 4375265 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 45.

The square root of 1653845634 is about 40667.5009559230. The cubic root of 1653845634 is about 1182.5830692835.

The spelling of 1653845634 in words is "one billion, six hundred fifty-three million, eight hundred forty-five thousand, six hundred thirty-four".