1951408841 has 2 divisors, whose sum is σ = 1951408842. Its totient is φ = 1951408840.

The previous prime is 1951408831. The next prime is 1951408859. The reversal of 1951408841 is 1488041591.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1947015625 + 4393216 = 44125^2 + 2096^2 .

It is a cyclic number.

It is not a de Polignac number, because 1951408841 - 2⁶ = 1951408777 is a prime.

It is not a weakly prime, because it can be changed into another prime (1951408831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 975704420 + 975704421.

It is an arithmetic number, because the mean of its divisors is an integer number (975704421).

Almost surely, 2^1951408841 is an apocalyptic number.

It is an amenable number.

1951408841 is a deficient number, since it is larger than the sum of its proper divisors (1).

1951408841 is an equidigital number, since it uses as much as digits as its factorization.

1951408841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46080, while the sum is 41.

The square root of 1951408841 is about 44174.7534345128. The cubic root of 1951408841 is about 1249.6337787961.

The spelling of 1951408841 in words is "one billion, nine hundred fifty-one million, four hundred eight thousand, eight hundred forty-one".