1651167797 has 2 divisors, whose sum is σ = 1651167798. Its totient is φ = 1651167796.

The previous prime is 1651167743. The next prime is 1651167803. The reversal of 1651167797 is 7977611561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1465281841 + 185885956 = 38279^2 + 13634^2 .

It is an emirp because it is prime and its reverse (7977611561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1651167797 - 2¹⁴ = 1651151413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1651167997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 825583898 + 825583899.

It is an arithmetic number, because the mean of its divisors is an integer number (825583899).

Almost surely, 2^1651167797 is an apocalyptic number.

It is an amenable number.

1651167797 is a deficient number, since it is larger than the sum of its proper divisors (1).

1651167797 is an equidigital number, since it uses as much as digits as its factorization.

1651167797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 555660, while the sum is 50.

The square root of 1651167797 is about 40634.5640680443. The cubic root of 1651167797 is about 1181.9444616375.

The spelling of 1651167797 in words is "one billion, six hundred fifty-one million, one hundred sixty-seven thousand, seven hundred ninety-seven".