1400151869 has 4 divisors (see below), whose sum is σ = 1402513596. Its totient is φ = 1397790144.

The previous prime is 1400151847. The next prime is 1400151923. The reversal of 1400151869 is 9681510041.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 315240025 + 1084911844 = 17755^2 + 32938^2 .

It is a cyclic number.

It is not a de Polignac number, because 1400151869 - 2¹² = 1400147773 is a prime.

It is a super-2 number, since 2×1400151869² = 3920850512528386322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400151829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1179974 + ... + 1181159.

It is an arithmetic number, because the mean of its divisors is an integer number (350628399).

Almost surely, 2^1400151869 is an apocalyptic number.

It is an amenable number.

1400151869 is a deficient number, since it is larger than the sum of its proper divisors (2361727).

1400151869 is an equidigital number, since it uses as much as digits as its factorization.

1400151869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2361726.

The product of its (nonzero) digits is 8640, while the sum is 35.

The square root of 1400151869 is about 37418.6032475826. The cubic root of 1400151869 is about 1118.7293916119.

The spelling of 1400151869 in words is "one billion, four hundred million, one hundred fifty-one thousand, eight hundred sixty-nine".