1954618049 has 2 divisors, whose sum is σ = 1954618050. Its totient is φ = 1954618048.

The previous prime is 1954618031. The next prime is 1954618063. The reversal of 1954618049 is 9408164591.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1951872400 + 2745649 = 44180^2 + 1657^2 .

It is a cyclic number.

It is not a de Polignac number, because 1954618049 - 2²⁸ = 1686182593 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1954617994 and 1954618012.

It is not a weakly prime, because it can be changed into another prime (1954618349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 977309024 + 977309025.

It is an arithmetic number, because the mean of its divisors is an integer number (977309025).

Almost surely, 2^1954618049 is an apocalyptic number.

It is an amenable number.

1954618049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1954618049 is an equidigital number, since it uses as much as digits as its factorization.

1954618049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 311040, while the sum is 47.

The square root of 1954618049 is about 44211.0625183336. The cubic root of 1954618049 is about 1250.3184359919.

The spelling of 1954618049 in words is "one billion, nine hundred fifty-four million, six hundred eighteen thousand, forty-nine".