1375745715 has 24 divisors (see below), whose sum is σ = 2472947568. Its totient is φ = 733730400.

The previous prime is 1375745677. The next prime is 1375745717. The reversal of 1375745715 is 5175475731.

1375745715 is a `hidden beast` number, since 1 + 3 + 7 + 5 + 74 + 571 + 5 = 666.

It is not a de Polignac number, because 1375745715 - 2¹¹ = 1375743667 is a prime.

It is a super-2 number, since 2×1375745715² = 3785352544681722450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (1375745717) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 564936 + ... + 567365.

It is an arithmetic number, because the mean of its divisors is an integer number (103039482).

Almost surely, 2^1375745715 is an apocalyptic number.

1375745715 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1375745715 is a deficient number, since it is larger than the sum of its proper divisors (1097201853).

1375745715 is an equidigital number, since it uses as much as digits as its factorization.

1375745715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1132321 (or 1132309 counting only the distinct ones).

The product of its digits is 514500, while the sum is 45.

The square root of 1375745715 is about 37091.0462915243. The cubic root of 1375745715 is about 1112.1910338409.

The spelling of 1375745715 in words is "one billion, three hundred seventy-five million, seven hundred forty-five thousand, seven hundred fifteen".