1400881361 has 4 divisors (see below), whose sum is σ = 1528234224. Its totient is φ = 1273528500.

The previous prime is 1400881303. The next prime is 1400881367. The reversal of 1400881361 is 1631880041.

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 a cyclic number.

It is not a de Polignac number, because 1400881361 - 2¹⁴ = 1400864977 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1400881367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63676415 + ... + 63676436.

It is an arithmetic number, because the mean of its divisors is an integer number (382058556).

Almost surely, 2^1400881361 is an apocalyptic number.

1400881361 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1400881361 is a deficient number, since it is larger than the sum of its proper divisors (127352863).

1400881361 is a wasteful number, since it uses less digits than its factorization.

1400881361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127352862.

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 1400881361 is about 37428.3496964534. The cubic root of 1400881361 is about 1118.9236473132.

The spelling of 1400881361 in words is "one billion, four hundred million, eight hundred eighty-one thousand, three hundred sixty-one".