1538457333807 has 32 divisors (see below), whose sum is σ = 2079686568960. Its totient is φ = 1011522412800.

The previous prime is 1538457333793. The next prime is 1538457333869. The reversal of 1538457333807 is 7083337548351.

It is a happy number.

It is not a de Polignac number, because 1538457333807 - 2³⁰ = 1537383591983 is a prime.

It is a super-2 number, since 2×1538457333807² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1538457313807) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88403307 + ... + 88420707.

It is an arithmetic number, because the mean of its divisors is an integer number (64990205280).

Almost surely, 2^{1538457333807} is an apocalyptic number.

1538457333807 is a deficient number, since it is larger than the sum of its proper divisors (541229235153).

1538457333807 is a wasteful number, since it uses less digits than its factorization.

1538457333807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18663.

The product of its (nonzero) digits is 25401600, while the sum is 57.

The spelling of 1538457333807 in words is "one trillion, five hundred thirty-eight billion, four hundred fifty-seven million, three hundred thirty-three thousand, eight hundred seven".