1951796653 has 2 divisors, whose sum is σ = 1951796654. Its totient is φ = 1951796652.

The previous prime is 1951796647. The next prime is 1951796669. The reversal of 1951796653 is 3566971591.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1644951364 + 306845289 = 40558^2 + 17517^2 .

It is a cyclic number.

It is not a de Polignac number, because 1951796653 - 2⁹ = 1951796141 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1951796653.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1951796153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 975898326 + 975898327.

It is an arithmetic number, because the mean of its divisors is an integer number (975898327).

Almost surely, 2^1951796653 is an apocalyptic number.

It is an amenable number.

1951796653 is a deficient number, since it is larger than the sum of its proper divisors (1).

1951796653 is an equidigital number, since it uses as much as digits as its factorization.

1951796653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1530900, while the sum is 52.

The square root of 1951796653 is about 44179.1427372691. The cubic root of 1951796653 is about 1249.7165550387.

The spelling of 1951796653 in words is "one billion, nine hundred fifty-one million, seven hundred ninety-six thousand, six hundred fifty-three".