1345921899 has 8 divisors (see below), whose sum is σ = 2050928640. Its totient is φ = 769098216.

The previous prime is 1345921897. The next prime is 1345921933. The reversal of 1345921899 is 9981295431.

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

It is not a de Polignac number, because 1345921899 - 2¹ = 1345921897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1345921897) 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, 32045739 + ... + 32045780.

It is an arithmetic number, because the mean of its divisors is an integer number (256366080).

Almost surely, 2^1345921899 is an apocalyptic number.

1345921899 is a deficient number, since it is larger than the sum of its proper divisors (705006741).

1345921899 is an equidigital number, since it uses as much as digits as its factorization.

1345921899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64091529.

The product of its digits is 699840, while the sum is 51.

The square root of 1345921899 is about 36686.8082422006. The cubic root of 1345921899 is about 1104.0954491422.

The spelling of 1345921899 in words is "one billion, three hundred forty-five million, nine hundred twenty-one thousand, eight hundred ninety-nine".