1377738047 has 24 divisors (see below), whose sum is σ = 1651154400. Its totient is φ = 1148434560.

The previous prime is 1377738001. The next prime is 1377738049. The reversal of 1377738047 is 7408377731.

It is not a de Polignac number, because 1377738047 - 2¹⁴ = 1377721663 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1377737992 and 1377738010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1377738049) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4401563 + ... + 4401875.

It is an arithmetic number, because the mean of its divisors is an integer number (68798100).

Almost surely, 2^1377738047 is an apocalyptic number.

1377738047 is a deficient number, since it is larger than the sum of its proper divisors (273416353).

1377738047 is an frugal number, since it uses more digits than its factorization.

1377738047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688 (or 361 counting only the distinct ones).

The product of its (nonzero) digits is 691488, while the sum is 47.

The square root of 1377738047 is about 37117.8938922994. The cubic root of 1377738047 is about 1112.7276603818.

The spelling of 1377738047 in words is "one billion, three hundred seventy-seven million, seven hundred thirty-eight thousand, forty-seven".