1401643090 has 8 divisors (see below), whose sum is σ = 2522957580. Its totient is φ = 560657232.

The previous prime is 1401643063. The next prime is 1401643123. The reversal of 1401643090 is 903461041.

It can be written as a sum of positive squares in 2 ways, for example, as 1361536201 + 40106889 = 36899^2 + 6333^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70082145 + ... + 70082164.

Almost surely, 2^1401643090 is an apocalyptic number.

1401643090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1401643090 is a deficient number, since it is larger than the sum of its proper divisors (1121314490).

1401643090 is a wasteful number, since it uses less digits than its factorization.

1401643090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140164316.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 1401643090 is about 37438.5241429200. The cubic root of 1401643090 is about 1119.1264154131.

The spelling of 1401643090 in words is "one billion, four hundred one million, six hundred forty-three thousand, ninety".