1522540690 has 16 divisors (see below), whose sum is σ = 2989716480. Its totient is φ = 553651120.

The previous prime is 1522540681. The next prime is 1522540697. The reversal of 1522540690 is 960452251.

It is a happy number.

It is a super-2 number, since 2×1522540690² = 4636260305411352200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1522540697) 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, 6920530 + ... + 6920749.

It is an arithmetic number, because the mean of its divisors is an integer number (186857280).

Almost surely, 2^1522540690 is an apocalyptic number.

1522540690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1522540690 is a deficient number, since it is larger than the sum of its proper divisors (1467175790).

1522540690 is a wasteful number, since it uses less digits than its factorization.

1522540690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13841297.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 1522540690 is about 39019.7474363943. The cubic root of 1522540690 is about 1150.4196804718.

The spelling of 1522540690 in words is "one billion, five hundred twenty-two million, five hundred forty thousand, six hundred ninety".