1400331145 has 8 divisors (see below), whose sum is σ = 1680658056. Its totient is φ = 1120091136.

The previous prime is 1400331131. The next prime is 1400331167. The reversal of 1400331145 is 5411330041.

It can be written as a sum of positive squares in 4 ways, for example, as 39237696 + 1361093449 = 6264^2 + 36893^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1400331145 - 2⁷ = 1400331017 is a prime.

It is a super-2 number, since 2×1400331145² = 3921854631314022050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21579 + ... + 57151.

It is an arithmetic number, because the mean of its divisors is an integer number (210082257).

Almost surely, 2^1400331145 is an apocalyptic number.

It is an amenable number.

1400331145 is a deficient number, since it is larger than the sum of its proper divisors (280326911).

1400331145 is an equidigital number, since it uses as much as digits as its factorization.

1400331145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43451.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1400331145 is about 37420.9987172978. The cubic root of 1400331145 is about 1118.7771370923. Note that the first 3 decimals are identical.

Adding to 1400331145 its reverse (5411330041), we get a palindrome (6811661186).

The spelling of 1400331145 in words is "one billion, four hundred million, three hundred thirty-one thousand, one hundred forty-five".