1387672263 has 16 divisors (see below), whose sum is σ = 2057267200. Its totient is φ = 924459480.

The previous prime is 1387672213. The next prime is 1387672267. The reversal of 1387672263 is 3622767831.

1387672263 is a `hidden beast` number, since 1 + 387 + 6 + 7 + 2 + 263 = 666.

1387672263 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1387672263 - 2¹⁰ = 1387671239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1387672267) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22248 + ... + 57186.

It is an arithmetic number, because the mean of its divisors is an integer number (128579200).

Almost surely, 2^1387672263 is an apocalyptic number.

1387672263 is a deficient number, since it is larger than the sum of its proper divisors (669594937).

1387672263 is a wasteful number, since it uses less digits than its factorization.

1387672263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36419 (or 36413 counting only the distinct ones).

The product of its digits is 508032, while the sum is 45.

The square root of 1387672263 is about 37251.4732997233. The cubic root of 1387672263 is about 1115.3957085163.

The spelling of 1387672263 in words is "one billion, three hundred eighty-seven million, six hundred seventy-two thousand, two hundred sixty-three".