1345471989 has 8 divisors (see below), whose sum is σ = 1816671360. Its totient is φ = 885626976.

The previous prime is 1345471973. The next prime is 1345471991. The reversal of 1345471989 is 9891745431.

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

It is not a de Polignac number, because 1345471989 - 2⁴ = 1345471973 is a prime.

It is a super-2 number, since 2×1345471989² = 3620589746367232242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345471289) 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, 2838312 + ... + 2838785.

It is an arithmetic number, because the mean of its divisors is an integer number (227083920).

Almost surely, 2^1345471989 is an apocalyptic number.

It is an amenable number.

1345471989 is a deficient number, since it is larger than the sum of its proper divisors (471199371).

1345471989 is an equidigital number, since it uses as much as digits as its factorization.

1345471989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5677179.

The product of its digits is 1088640, while the sum is 51.

The square root of 1345471989 is about 36680.6759616014. The cubic root of 1345471989 is about 1103.9724110610.

The spelling of 1345471989 in words is "one billion, three hundred forty-five million, four hundred seventy-one thousand, nine hundred eighty-nine".