1651442461 has 8 divisors (see below), whose sum is σ = 1665601344. Its totient is φ = 1637307360.

The previous prime is 1651442413. The next prime is 1651442467. The reversal of 1651442461 is 1642441561.

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 1651442461 - 2²¹ = 1649345309 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 (1651442467) 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, 151000 + ... + 161566.

It is an arithmetic number, because the mean of its divisors is an integer number (208200168).

Almost surely, 2^1651442461 is an apocalyptic number.

It is an amenable number.

1651442461 is a deficient number, since it is larger than the sum of its proper divisors (14158883).

1651442461 is a wasteful number, since it uses less digits than its factorization.

1651442461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11891.

The product of its digits is 23040, while the sum is 34.

The square root of 1651442461 is about 40637.9436118512. The cubic root of 1651442461 is about 1182.0099949720.

The spelling of 1651442461 in words is "one billion, six hundred fifty-one million, four hundred forty-two thousand, four hundred sixty-one".