7857153652 has 12 divisors (see below), whose sum is σ = 13790822500. Its totient is φ = 3916918656.

The previous prime is 7857153649. The next prime is 7857153673. The reversal of 7857153652 is 2563517587.

It can be written as a sum of positive squares in 2 ways, for example, as 3847224676 + 4009928976 = 62026^2 + 63324^2 .

It is a super-2 number, since 2×7857153652² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7857153596 and 7857153605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2913027 + ... + 2915722.

Almost surely, 2^7857153652 is an apocalyptic number.

It is an amenable number.

7857153652 is a deficient number, since it is larger than the sum of its proper divisors (5933668848).

7857153652 is a wasteful number, since it uses less digits than its factorization.

7857153652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5829090 (or 5829088 counting only the distinct ones).

The product of its digits is 1764000, while the sum is 49.

The square root of 7857153652 is about 88640.5869339774. The cubic root of 7857153652 is about 1988.0245753864.

The spelling of 7857153652 in words is "seven billion, eight hundred fifty-seven million, one hundred fifty-three thousand, six hundred fifty-two".