1958484091 has 2 divisors, whose sum is σ = 1958484092. Its totient is φ = 1958484090.

The previous prime is 1958484083. The next prime is 1958484107. The reversal of 1958484091 is 1904848591.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1958484091 - 2³ = 1958484083 is a prime.

It is not a weakly prime, because it can be changed into another prime (1958484061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 979242045 + 979242046.

It is an arithmetic number, because the mean of its divisors is an integer number (979242046).

Almost surely, 2^1958484091 is an apocalyptic number.

1958484091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1958484091 is an equidigital number, since it uses as much as digits as its factorization.

1958484091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 414720, while the sum is 49.

The square root of 1958484091 is about 44254.7634837200. The cubic root of 1958484091 is about 1251.1422286797.

The spelling of 1958484091 in words is "one billion, nine hundred fifty-eight million, four hundred eighty-four thousand, ninety-one".