1652640129 has 12 divisors (see below), whose sum is σ = 2728167936. Its totient is φ = 944365752.

The previous prime is 1652640107. The next prime is 1652640133. The reversal of 1652640129 is 9210462561.

1652640129 is a `hidden beast` number, since 1 + 6 + 5 + 2 + 640 + 1 + 2 + 9 = 666.

It is not a de Polignac number, because 1652640129 - 2⁷ = 1652640001 is a prime.

It is a super-2 number, since 2×1652640129² = 5462438791962273282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1652640093 and 1652640102.

It is not an unprimeable number, because it can be changed into a prime (1652640169) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13116129 + ... + 13116254.

It is an arithmetic number, because the mean of its divisors is an integer number (227347328).

Almost surely, 2^1652640129 is an apocalyptic number.

It is an amenable number.

1652640129 is a deficient number, since it is larger than the sum of its proper divisors (1075527807).

1652640129 is a wasteful number, since it uses less digits than its factorization.

1652640129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26232396 (or 26232393 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 1652640129 is about 40652.6767753367. The cubic root of 1652640129 is about 1182.2956671434.

The spelling of 1652640129 in words is "one billion, six hundred fifty-two million, six hundred forty thousand, one hundred twenty-nine".