1538523040 has 48 divisors (see below), whose sum is σ = 3668771232. Its totient is φ = 609650944.

The previous prime is 1538523037. The next prime is 1538523053. The reversal of 1538523040 is 403258351.

It is a super-2 number, since 2×1538523040² = 4734106289221683200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1538522993 and 1538523011.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27814 + ... + 62053.

It is an arithmetic number, because the mean of its divisors is an integer number (76432734).

Almost surely, 2^1538523040 is an apocalyptic number.

1538523040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1538523040 is an abundant number, since it is smaller than the sum of its proper divisors (2130248192).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1538523040 is a wasteful number, since it uses less digits than its factorization.

1538523040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89989 (or 89981 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 1538523040 is about 39224.0110136636. The cubic root of 1538523040 is about 1154.4310560330.

The spelling of 1538523040 in words is "one billion, five hundred thirty-eight million, five hundred twenty-three thousand, forty".