1954697119 has 2 divisors, whose sum is σ = 1954697120. Its totient is φ = 1954697118.

The previous prime is 1954697089. The next prime is 1954697189. The reversal of 1954697119 is 9117964591.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1954697119 - 2²¹ = 1952599967 is a prime.

It is a super-2 number, since 2×1954697119² = 7641681654053800322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1954697189) 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, 977348559 + 977348560.

It is an arithmetic number, because the mean of its divisors is an integer number (977348560).

Almost surely, 2^1954697119 is an apocalyptic number.

1954697119 is a deficient number, since it is larger than the sum of its proper divisors (1).

1954697119 is an equidigital number, since it uses as much as digits as its factorization.

1954697119 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 612360, while the sum is 52.

The square root of 1954697119 is about 44211.9567424922. The cubic root of 1954697119 is about 1250.3352954402.

The spelling of 1954697119 in words is "one billion, nine hundred fifty-four million, six hundred ninety-seven thousand, one hundred nineteen".