1954098457 has 2 divisors, whose sum is σ = 1954098458. Its totient is φ = 1954098456.

The previous prime is 1954098431. The next prime is 1954098511. The reversal of 1954098457 is 7548904591.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1646411776 + 307686681 = 40576^2 + 17541^2 .

It is an emirp because it is prime and its reverse (7548904591) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1954098457 - 2¹⁵ = 1954065689 is a prime.

It is not a weakly prime, because it can be changed into another prime (1954099457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 977049228 + 977049229.

It is an arithmetic number, because the mean of its divisors is an integer number (977049229).

Almost surely, 2^1954098457 is an apocalyptic number.

It is an amenable number.

1954098457 is a deficient number, since it is larger than the sum of its proper divisors (1).

1954098457 is an equidigital number, since it uses as much as digits as its factorization.

1954098457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1814400, while the sum is 52.

The square root of 1954098457 is about 44205.1858609372. The cubic root of 1954098457 is about 1250.2076363345.

The spelling of 1954098457 in words is "one billion, nine hundred fifty-four million, ninety-eight thousand, four hundred fifty-seven".