1540162020 has 48 divisors (see below), whose sum is σ = 4346431488. Its totient is φ = 407473920.

The previous prime is 1540161947. The next prime is 1540162049. The reversal of 1540162020 is 202610451.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93441 + ... + 108680.

It is an arithmetic number, because the mean of its divisors is an integer number (90550656).

Almost surely, 2^1540162020 is an apocalyptic number.

1540162020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1540162020 is an abundant number, since it is smaller than the sum of its proper divisors (2806269468).

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

1540162020 is a wasteful number, since it uses less digits than its factorization.

1540162020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202260 (or 202258 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1540162020 is about 39244.8980123531. The cubic root of 1540162020 is about 1154.8408468698.

Adding to 1540162020 its reverse (202610451), we get a palindrome (1742772471).

It can be divided in two parts, 15401 and 62020, that added together give a triangular number (77421 = T₃₉₃).

The spelling of 1540162020 in words is "one billion, five hundred forty million, one hundred sixty-two thousand, twenty".