1337401621 has 8 divisors (see below), whose sum is σ = 1408852800. Its totient is φ = 1266056640.

The previous prime is 1337401601. The next prime is 1337401633. The reversal of 1337401621 is 1261047331.

1337401621 is a nontrivial binomial coefficient, being equal to C(51719, 2).

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

It is not a de Polignac number, because 1337401621 - 2¹⁵ = 1337368853 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 1337401621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1337401601) 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, 1 + ... + 51718.

It is an arithmetic number, because the mean of its divisors is an integer number (176106600).

Almost surely, 2^1337401621 is an apocalyptic number.

1337401621 is the 51718-th triangular number.

1337401621 is the 17240-th centered nonagonal number.

It is an amenable number.

1337401621 is a deficient number, since it is larger than the sum of its proper divisors (71451179).

1337401621 is a wasteful number, since it uses less digits than its factorization.

1337401621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53099.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 1337401621 is about 36570.5020610874. The cubic root of 1337401621 is about 1101.7607121728.

Adding to 1337401621 its reverse (1261047331), we get a palindrome (2598448952).

The spelling of 1337401621 in words is "one billion, three hundred thirty-seven million, four hundred one thousand, six hundred twenty-one".