1359111381 has 4 divisors (see below), whose sum is σ = 1812148512. Its totient is φ = 906074252.

The previous prime is 1359111373. The next prime is 1359111389. The reversal of 1359111381 is 1831119531.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (1359111373) and next prime (1359111389).

It is a cyclic number.

It is not a de Polignac number, because 1359111381 - 2³ = 1359111373 is a prime.

It is a super-2 number, since 2×1359111381² = 3694367491927454322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1359111389) 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, 226518561 + ... + 226518566.

It is an arithmetic number, because the mean of its divisors is an integer number (453037128).

Almost surely, 2^1359111381 is an apocalyptic number.

It is an amenable number.

1359111381 is a deficient number, since it is larger than the sum of its proper divisors (453037131).

1359111381 is an equidigital number, since it uses as much as digits as its factorization.

1359111381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453037130.

The product of its digits is 3240, while the sum is 33.

The square root of 1359111381 is about 36866.1278275872. The cubic root of 1359111381 is about 1107.6902926197.

The spelling of 1359111381 in words is "one billion, three hundred fifty-nine million, one hundred eleven thousand, three hundred eighty-one".