1377513889 has 4 divisors (see below), whose sum is σ = 1450014640. Its totient is φ = 1305013140.

The previous prime is 1377513871. The next prime is 1377513919. The reversal of 1377513889 is 9883157731.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9883157731 = 35129 ⋅281339.

It is a cyclic number.

It is not a de Polignac number, because 1377513889 - 2¹⁷ = 1377382817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1377513829) 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, 36250347 + ... + 36250384.

It is an arithmetic number, because the mean of its divisors is an integer number (362503660).

Almost surely, 2^1377513889 is an apocalyptic number.

1377513889 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1377513889 is a deficient number, since it is larger than the sum of its proper divisors (72500751).

1377513889 is an equidigital number, since it uses as much as digits as its factorization.

1377513889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72500750.

The product of its digits is 1270080, while the sum is 52.

The square root of 1377513889 is about 37114.8742285354. The cubic root of 1377513889 is about 1112.6673101732.

The spelling of 1377513889 in words is "one billion, three hundred seventy-seven million, five hundred thirteen thousand, eight hundred eighty-nine".