1373573145 has 24 divisors (see below), whose sum is σ = 2556529344. Its totient is φ = 627918816.

The previous prime is 1373573129. The next prime is 1373573207. The reversal of 1373573145 is 5413753731.

It is a happy number.

It is not a de Polignac number, because 1373573145 - 2⁴ = 1373573129 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 933669 + ... + 935138.

It is an arithmetic number, because the mean of its divisors is an integer number (106522056).

Almost surely, 2^1373573145 is an apocalyptic number.

1373573145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1373573145 is a deficient number, since it is larger than the sum of its proper divisors (1182956199).

1373573145 is a wasteful number, since it uses less digits than its factorization.

1373573145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1868829 (or 1868822 counting only the distinct ones).

The product of its digits is 132300, while the sum is 39.

The square root of 1373573145 is about 37061.7477326691. The cubic root of 1373573145 is about 1111.6052700844.

The spelling of 1373573145 in words is "one billion, three hundred seventy-three million, five hundred seventy-three thousand, one hundred forty-five".