1651196117 has 4 divisors (see below), whose sum is σ = 1651435116. Its totient is φ = 1650957120.

The previous prime is 1651196089. The next prime is 1651196119. The reversal of 1651196117 is 7116911561.

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

It can be written as a sum of positive squares in 2 ways, for example, as 367335556 + 1283860561 = 19166^2 + 35831^2 .

It is a cyclic number.

It is not a de Polignac number, because 1651196117 - 2¹² = 1651192021 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 (1651196119) 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, 108818 + ... + 123059.

It is an arithmetic number, because the mean of its divisors is an integer number (412858779).

Almost surely, 2^1651196117 is an apocalyptic number.

It is an amenable number.

1651196117 is a deficient number, since it is larger than the sum of its proper divisors (238999).

1651196117 is an equidigital number, since it uses as much as digits as its factorization.

1651196117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238998.

The product of its digits is 11340, while the sum is 38.

The square root of 1651196117 is about 40634.9125383579. The cubic root of 1651196117 is about 1181.9512189713.

The spelling of 1651196117 in words is "one billion, six hundred fifty-one million, one hundred ninety-six thousand, one hundred seventeen".