1381235417 has 4 divisors (see below), whose sum is σ = 1387163700. Its totient is φ = 1375307136.

The previous prime is 1381235413. The next prime is 1381235423. The reversal of 1381235417 is 7145321831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7145321831 = 8263 ⋅864737.

It can be written as a sum of positive squares in 2 ways, for example, as 82065481 + 1299169936 = 9059^2 + 36044^2 .

It is a cyclic number.

It is not a de Polignac number, because 1381235417 - 2² = 1381235413 is a prime.

It is a super-2 number, since 2×1381235417² = 3815622554350327778, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1381235413) 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, 2963792 + ... + 2964257.

It is an arithmetic number, because the mean of its divisors is an integer number (346790925).

Almost surely, 2^1381235417 is an apocalyptic number.

It is an amenable number.

1381235417 is a deficient number, since it is larger than the sum of its proper divisors (5928283).

1381235417 is an equidigital number, since it uses as much as digits as its factorization.

1381235417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5928282.

The product of its digits is 20160, while the sum is 35.

The square root of 1381235417 is about 37164.9756760313. The cubic root of 1381235417 is about 1113.6684130015.

The spelling of 1381235417 in words is "one billion, three hundred eighty-one million, two hundred thirty-five thousand, four hundred seventeen".