1954054393 has 2 divisors, whose sum is σ = 1954054394. Its totient is φ = 1954054392.

The previous prime is 1954054369. The next prime is 1954054429. The reversal of 1954054393 is 3934504591.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1369962169 + 584092224 = 37013^2 + 24168^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1954054393 is a prime.

It is not a weakly prime, because it can be changed into another prime (1954055393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 977027196 + 977027197.

It is an arithmetic number, because the mean of its divisors is an integer number (977027197).

Almost surely, 2^1954054393 is an apocalyptic number.

It is an amenable number.

1954054393 is a deficient number, since it is larger than the sum of its proper divisors (1).

1954054393 is an equidigital number, since it uses as much as digits as its factorization.

1954054393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 291600, while the sum is 43.

The square root of 1954054393 is about 44204.6874550652. The cubic root of 1954054393 is about 1250.1982390660.

The spelling of 1954054393 in words is "one billion, nine hundred fifty-four million, fifty-four thousand, three hundred ninety-three".