1148637137638 has 4 divisors (see below), whose sum is σ = 1722955706460. Its totient is φ = 574318568818.

The previous prime is 1148637137603. The next prime is 1148637137647. The reversal of 1148637137638 is 8367317368411.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×1148637137638² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 287159284408 + ... + 287159284411.

It is an arithmetic number, because the mean of its divisors is an integer number (430738926615).

Almost surely, 2^{1148637137638} is an apocalyptic number.

1148637137638 is a deficient number, since it is larger than the sum of its proper divisors (574318568822).

1148637137638 is an equidigital number, since it uses as much as digits as its factorization.

1148637137638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574318568821.

The product of its digits is 12192768, while the sum is 58.

The spelling of 1148637137638 in words is "one trillion, one hundred forty-eight billion, six hundred thirty-seven million, one hundred thirty-seven thousand, six hundred thirty-eight".