1361420651 has 4 divisors (see below), whose sum is σ = 1362823704. Its totient is φ = 1360017600.

The previous prime is 1361420617. The next prime is 1361420653. The reversal of 1361420651 is 1560241631.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1361420651 - 2¹⁰ = 1361419627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1361420653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 700070 + ... + 702011.

It is an arithmetic number, because the mean of its divisors is an integer number (340705926).

Almost surely, 2^1361420651 is an apocalyptic number.

1361420651 is a deficient number, since it is larger than the sum of its proper divisors (1403053).

1361420651 is an equidigital number, since it uses as much as digits as its factorization.

1361420651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1403052.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 1361420651 is about 36897.4342061884. The cubic root of 1361420651 is about 1108.3172975438.

The spelling of 1361420651 in words is "one billion, three hundred sixty-one million, four hundred twenty thousand, six hundred fifty-one".