1540404033 has 24 divisors (see below), whose sum is σ = 2390716800. Its totient is φ = 879671520.

The previous prime is 1540404029. The next prime is 1540404059. The reversal of 1540404033 is 3304040451.

It is not a de Polignac number, because 1540404033 - 2² = 1540404029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1540403994 and 1540404012.

It is not an unprimeable number, because it can be changed into a prime (1540404433) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 372648 + ... + 376758.

It is an arithmetic number, because the mean of its divisors is an integer number (99613200).

Almost surely, 2^1540404033 is an apocalyptic number.

It is an amenable number.

1540404033 is a deficient number, since it is larger than the sum of its proper divisors (850312767).

1540404033 is a wasteful number, since it uses less digits than its factorization.

1540404033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6677 (or 6670 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 1540404033 is about 39247.9812601871. The cubic root of 1540404033 is about 1154.9013322509.

Adding to 1540404033 its reverse (3304040451), we get a palindrome (4844444484).

The spelling of 1540404033 in words is "one billion, five hundred forty million, four hundred four thousand, thirty-three".