1540011040 has 48 divisors (see below), whose sum is σ = 3736622232. Its totient is φ = 599353344.

The previous prime is 1540011007. The next prime is 1540011061. The reversal of 1540011040 is 401100451.

It can be written as a sum of positive squares in 4 ways, for example, as 1351003536 + 189007504 = 36756^2 + 13748^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

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, 124149 + ... + 135988.

Almost surely, 2^1540011040 is an apocalyptic number.

1540011040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1540011040 is an abundant number, since it is smaller than the sum of its proper divisors (2196611192).

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

1540011040 is a wasteful number, since it uses less digits than its factorization.

1540011040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260189 (or 260181 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 1540011040 is about 39242.9744030699. The cubic root of 1540011040 is about 1154.8031098079.

Adding to 1540011040 its reverse (401100451), we get a palindrome (1941111491).

The spelling of 1540011040 in words is "one billion, five hundred forty million, eleven thousand, forty".