1401660451 has 8 divisors (see below), whose sum is σ = 1451444400. Its totient is φ = 1351973280.

The previous prime is 1401660427. The next prime is 1401660497. The reversal of 1401660451 is 1540661041.

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 1401660451 - 2⁹ = 1401659939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1401660401) 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, 5940 + ... + 53278.

It is an arithmetic number, because the mean of its divisors is an integer number (181430550).

Almost surely, 2^1401660451 is an apocalyptic number.

1401660451 is a deficient number, since it is larger than the sum of its proper divisors (49783949).

1401660451 is a wasteful number, since it uses less digits than its factorization.

1401660451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48389.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 1401660451 is about 37438.7560023033. The cubic root of 1401660451 is about 1119.1310359601.

The spelling of 1401660451 in words is "one billion, four hundred one million, six hundred sixty thousand, four hundred fifty-one".