1345457919 has 8 divisors (see below), whose sum is σ = 1931939632. Its totient is φ = 827974080.

The previous prime is 1345457903. The next prime is 1345457951. The reversal of 1345457919 is 9197545431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1345457919 - 2⁴ = 1345457903 is a prime.

It is a super-2 number, since 2×1345457919² = 3620514023599621122, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345457989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17249422 + ... + 17249499.

It is an arithmetic number, because the mean of its divisors is an integer number (241492454).

Almost surely, 2^1345457919 is an apocalyptic number.

1345457919 is a deficient number, since it is larger than the sum of its proper divisors (586481713).

1345457919 is a wasteful number, since it uses less digits than its factorization.

1345457919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34498937.

The product of its digits is 680400, while the sum is 48.

The square root of 1345457919 is about 36680.4841707413. The cubic root of 1345457919 is about 1103.9685628585.

The spelling of 1345457919 in words is "one billion, three hundred forty-five million, four hundred fifty-seven thousand, nine hundred nineteen".