1375655247 has 12 divisors (see below), whose sum is σ = 2035522944. Its totient is φ = 894734880.

The previous prime is 1375655221. The next prime is 1375655279. The reversal of 1375655247 is 7425565731.

It is a happy number.

1375655247 is a `hidden beast` number, since 1 + 3 + 7 + 56 + 552 + 47 = 666.

It is not a de Polignac number, because 1375655247 - 2¹⁰ = 1375654223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1375655207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1863663 + ... + 1864400.

It is an arithmetic number, because the mean of its divisors is an integer number (169626912).

Almost surely, 2^1375655247 is an apocalyptic number.

1375655247 is a deficient number, since it is larger than the sum of its proper divisors (659867697).

1375655247 is a wasteful number, since it uses less digits than its factorization.

1375655247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3728110 (or 3728107 counting only the distinct ones).

The product of its digits is 882000, while the sum is 45.

The square root of 1375655247 is about 37089.8267318681. The cubic root of 1375655247 is about 1112.1666543588.

The spelling of 1375655247 in words is "one billion, three hundred seventy-five million, six hundred fifty-five thousand, two hundred forty-seven".