1538257849470 has 96 divisors (see below), whose sum is σ = 4022089344000. Its totient is φ = 407888474112.

The previous prime is 1538257849463. The next prime is 1538257849511. The reversal of 1538257849470 is 749487528351.

1538257849470 is a `hidden beast` number, since 1 + 5 + 3 + 8 + 2 + 5 + 78 + 494 + 70 = 666.

It is a super-2 number, since 2×1538257849470² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1538257849398 and 1538257849407.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11775171 + ... + 11905089.

It is an arithmetic number, because the mean of its divisors is an integer number (41896764000).

Almost surely, 2^{1538257849470} is an apocalyptic number.

1538257849470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1538257849470 is an abundant number, since it is smaller than the sum of its proper divisors (2483831494530).

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

1538257849470 is a wasteful number, since it uses less digits than its factorization.

1538257849470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130674 (or 130671 counting only the distinct ones).

The product of its (nonzero) digits is 67737600, while the sum is 63.

The spelling of 1538257849470 in words is "one trillion, five hundred thirty-eight billion, two hundred fifty-seven million, eight hundred forty-nine thousand, four hundred seventy".