1421751613 has 8 divisors (see below), whose sum is σ = 1465440768. Its totient is φ = 1378545504.

The previous prime is 1421751587. The next prime is 1421751619. The reversal of 1421751613 is 3161571241.

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 1421751613 - 2⁵ = 1421751581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421751619) 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, 114781 + ... + 126562.

It is an arithmetic number, because the mean of its divisors is an integer number (183180096).

Almost surely, 2^1421751613 is an apocalyptic number.

It is an amenable number.

1421751613 is a deficient number, since it is larger than the sum of its proper divisors (43689155).

1421751613 is a wasteful number, since it uses less digits than its factorization.

1421751613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241523.

The product of its digits is 5040, while the sum is 31.

The square root of 1421751613 is about 37706.1216913116. The cubic root of 1421751613 is about 1124.4528336380.

The spelling of 1421751613 in words is "one billion, four hundred twenty-one million, seven hundred fifty-one thousand, six hundred thirteen".