1951044493 has 2 divisors, whose sum is σ = 1951044494. Its totient is φ = 1951044492.

The previous prime is 1951044481. The next prime is 1951044569. The reversal of 1951044493 is 3944401591.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1582289284 + 368755209 = 39778^2 + 19203^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1951044493 is a prime.

It is a super-2 number, since 2×1951044493² = 7613149227331254098, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1951047493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 975522246 + 975522247.

It is an arithmetic number, because the mean of its divisors is an integer number (975522247).

Almost surely, 2^1951044493 is an apocalyptic number.

It is an amenable number.

1951044493 is a deficient number, since it is larger than the sum of its proper divisors (1).

1951044493 is an equidigital number, since it uses as much as digits as its factorization.

1951044493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 1951044493 is about 44170.6293027392. The cubic root of 1951044493 is about 1249.5560008171.

The spelling of 1951044493 in words is "one billion, nine hundred fifty-one million, forty-four thousand, four hundred ninety-three".