1238870477794 has 4 divisors (see below), whose sum is σ = 1858305716694. Its totient is φ = 619435238896.

The previous prime is 1238870477773. The next prime is 1238870477833. The reversal of 1238870477794 is 4977740788321.

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

It can be written as a sum of positive squares in only one way, i.e., 1188307109025 + 50563368769 = 1090095^2 + 224863^2 .

It is a Smith number, since the sum of its digits (67) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309717619447 + ... + 309717619450.

Almost surely, 2^{1238870477794} is an apocalyptic number.

1238870477794 is a deficient number, since it is larger than the sum of its proper divisors (619435238900).

1238870477794 is an equidigital number, since it uses as much as digits as its factorization.

1238870477794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619435238899.

The product of its (nonzero) digits is 132765696, while the sum is 67.

The spelling of 1238870477794 in words is "one trillion, two hundred thirty-eight billion, eight hundred seventy million, four hundred seventy-seven thousand, seven hundred ninety-four".