1401662813 has 8 divisors (see below), whose sum is σ = 1477435200. Its totient is φ = 1326090528.

The previous prime is 1401662809. The next prime is 1401662827. The reversal of 1401662813 is 3182661041.

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 1401662813 - 2² = 1401662809 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1401662813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401662863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35528 + ... + 63761.

It is an arithmetic number, because the mean of its divisors is an integer number (184679400).

Almost surely, 2^1401662813 is an apocalyptic number.

It is an amenable number.

1401662813 is a deficient number, since it is larger than the sum of its proper divisors (75772387).

1401662813 is an equidigital number, since it uses as much as digits as its factorization.

1401662813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100051.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 1401662813 is about 37438.7875471415. The cubic root of 1401662813 is about 1119.1316645922.

The spelling of 1401662813 in words is "one billion, four hundred one million, six hundred sixty-two thousand, eight hundred thirteen".