1520245343 has 4 divisors (see below), whose sum is σ = 1542935640. Its totient is φ = 1497555048.

The previous prime is 1520245333. The next prime is 1520245351. The reversal of 1520245343 is 3435420251.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1520245343 - 2²⁶ = 1453136479 is a prime.

It is a super-2 number, since 2×1520245343² = 4622291805826375298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1520245313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11345048 + ... + 11345181.

It is an arithmetic number, because the mean of its divisors is an integer number (385733910).

Almost surely, 2^1520245343 is an apocalyptic number.

1520245343 is a deficient number, since it is larger than the sum of its proper divisors (22690297).

1520245343 is an equidigital number, since it uses as much as digits as its factorization.

1520245343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22690296.

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 1520245343 is about 38990.3237098642. The cubic root of 1520245343 is about 1149.8412743756.

Adding to 1520245343 its reverse (3435420251), we get a palindrome (4955665594).

The spelling of 1520245343 in words is "one billion, five hundred twenty million, two hundred forty-five thousand, three hundred forty-three".