1954529257 has 2 divisors, whose sum is σ = 1954529258. Its totient is φ = 1954529256.

The previous prime is 1954529237. The next prime is 1954529281. The reversal of 1954529257 is 7529254591.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1682312256 + 272217001 = 41016^2 + 16499^2 .

It is a cyclic number.

It is not a de Polignac number, because 1954529257 - 2²⁷ = 1820311529 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1954529257.

It is not a weakly prime, because it can be changed into another prime (1954529207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 977264628 + 977264629.

It is an arithmetic number, because the mean of its divisors is an integer number (977264629).

Almost surely, 2^1954529257 is an apocalyptic number.

It is an amenable number.

1954529257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1954529257 is an equidigital number, since it uses as much as digits as its factorization.

1954529257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1134000, while the sum is 49.

The square root of 1954529257 is about 44210.0583238701. The cubic root of 1954529257 is about 1250.2995030593.

The spelling of 1954529257 in words is "one billion, nine hundred fifty-four million, five hundred twenty-nine thousand, two hundred fifty-seven".