1377513265 has 8 divisors (see below), whose sum is σ = 1653254568. Its totient is φ = 1101851520.

The previous prime is 1377513239. The next prime is 1377513287. The reversal of 1377513265 is 5623157731.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 168143089 + 1209370176 = 12967^2 + 34776^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1377513265 - 2¹¹ = 1377511217 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29245 + ... + 60085.

It is an arithmetic number, because the mean of its divisors is an integer number (206656821).

Almost surely, 2^1377513265 is an apocalyptic number.

It is an amenable number.

1377513265 is a deficient number, since it is larger than the sum of its proper divisors (275741303).

1377513265 is an equidigital number, since it uses as much as digits as its factorization.

1377513265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39779.

The product of its digits is 132300, while the sum is 40.

The square root of 1377513265 is about 37114.8658222012. The cubic root of 1377513265 is about 1112.6671421641.

The spelling of 1377513265 in words is "one billion, three hundred seventy-seven million, five hundred thirteen thousand, two hundred sixty-five".