1375026913 has 4 divisors (see below), whose sum is σ = 1480798228. Its totient is φ = 1269255600.

The previous prime is 1375026911. The next prime is 1375026931. The reversal of 1375026913 is 3196205731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3196205731 = 683 ⋅4679657.

It can be written as a sum of positive squares in 2 ways, for example, as 893531664 + 481495249 = 29892^2 + 21943^2 .

It is a cyclic number.

It is not a de Polignac number, because 1375026913 - 2¹ = 1375026911 is a prime.

It is a super-2 number, since 2×1375026913² = 3781398022948619138, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1375026911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52885638 + ... + 52885663.

It is an arithmetic number, because the mean of its divisors is an integer number (370199557).

Almost surely, 2^1375026913 is an apocalyptic number.

1375026913 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1375026913 is a deficient number, since it is larger than the sum of its proper divisors (105771315).

1375026913 is a wasteful number, since it uses less digits than its factorization.

1375026913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105771314.

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 1375026913 is about 37081.3553285206. The cubic root of 1375026913 is about 1111.9973002647.

The spelling of 1375026913 in words is "one billion, three hundred seventy-five million, twenty-six thousand, nine hundred thirteen".