1353989945 has 64 divisors (see below), whose sum is σ = 2142830592. Its totient is φ = 796608000.

The previous prime is 1353989929. The next prime is 1353989953. The reversal of 1353989945 is 5499893531.

It is a happy number.

It is not a de Polignac number, because 1353989945 - 2⁴ = 1353989929 is a prime.

It is a super-2 number, since 2×1353989945² = 3666577542322206050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 487952 + ... + 490718.

It is an arithmetic number, because the mean of its divisors is an integer number (33481728).

Almost surely, 2^1353989945 is an apocalyptic number.

It is an amenable number.

1353989945 is a deficient number, since it is larger than the sum of its proper divisors (788840647).

1353989945 is a wasteful number, since it uses less digits than its factorization.

1353989945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2862.

The product of its digits is 5248800, while the sum is 56.

The square root of 1353989945 is about 36796.6023567394. The cubic root of 1353989945 is about 1106.2971996417.

The spelling of 1353989945 in words is "one billion, three hundred fifty-three million, nine hundred eighty-nine thousand, nine hundred forty-five".