1951485541 has 2 divisors, whose sum is σ = 1951485542. Its totient is φ = 1951485540.

The previous prime is 1951485527. The next prime is 1951485563. The reversal of 1951485541 is 1455841591.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1638549441 + 312936100 = 40479^2 + 17690^2 .

It is a cyclic number.

It is not a de Polignac number, because 1951485541 - 2⁵ = 1951485509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1951485521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 975742770 + 975742771.

It is an arithmetic number, because the mean of its divisors is an integer number (975742771).

Almost surely, 2^1951485541 is an apocalyptic number.

It is an amenable number.

1951485541 is a deficient number, since it is larger than the sum of its proper divisors (1).

1951485541 is an equidigital number, since it uses as much as digits as its factorization.

1951485541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 144000, while the sum is 43.

The square root of 1951485541 is about 44175.6215689151. The cubic root of 1951485541 is about 1249.6501508403.

The spelling of 1951485541 in words is "one billion, nine hundred fifty-one million, four hundred eighty-five thousand, five hundred forty-one".