1377504457 has 4 divisors (see below), whose sum is σ = 1574290816. Its totient is φ = 1180718100.

The previous prime is 1377504451. The next prime is 1377504461. The reversal of 1377504457 is 7544057731.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1377504457 - 2²³ = 1369115849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1377504451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98393169 + ... + 98393182.

It is an arithmetic number, because the mean of its divisors is an integer number (393572704).

Almost surely, 2^1377504457 is an apocalyptic number.

It is an amenable number.

1377504457 is a deficient number, since it is larger than the sum of its proper divisors (196786359).

1377504457 is an equidigital number, since it uses as much as digits as its factorization.

1377504457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196786358.

The product of its (nonzero) digits is 411600, while the sum is 43.

The square root of 1377504457 is about 37114.7471633581. The cubic root of 1377504457 is about 1112.6647706460.

The spelling of 1377504457 in words is "one billion, three hundred seventy-seven million, five hundred four thousand, four hundred fifty-seven".