13738486491 has 32 divisors (see below), whose sum is σ = 20475095040. Its totient is φ = 9104356800.

The previous prime is 13738486483. The next prime is 13738486499. The reversal of 13738486491 is 19468483731.

13738486491 is a `hidden beast` number, since 1 + 3 + 73 + 8 + 4 + 86 + 491 = 666.

It is an interprime number because it is at equal distance from previous prime (13738486483) and next prime (13738486499).

It is not a de Polignac number, because 13738486491 - 2³ = 13738486483 is a prime.

It is a super-2 number, since 2×13738486491² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13738486499) 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, 3510826 + ... + 3514736.

It is an arithmetic number, because the mean of its divisors is an integer number (639846720).

Almost surely, 2^13738486491 is an apocalyptic number.

13738486491 is a deficient number, since it is larger than the sum of its proper divisors (6736608549).

13738486491 is a wasteful number, since it uses less digits than its factorization.

13738486491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4664 (or 4658 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The spelling of 13738486491 in words is "thirteen billion, seven hundred thirty-eight million, four hundred eighty-six thousand, four hundred ninety-one".