1545018420 has 48 divisors (see below), whose sum is σ = 4719331008. Its totient is φ = 374549760.

The previous prime is 1545018403. The next prime is 1545018443. The reversal of 1545018420 is 248105451.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

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, 1169809 + ... + 1171128.

It is an arithmetic number, because the mean of its divisors is an integer number (98319396).

Almost surely, 2^1545018420 is an apocalyptic number.

1545018420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1545018420 is an abundant number, since it is smaller than the sum of its proper divisors (3174312588).

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

1545018420 is a wasteful number, since it uses less digits than its factorization.

1545018420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2340960 (or 2340958 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 30.

The square root of 1545018420 is about 39306.7223258312. The cubic root of 1545018420 is about 1156.0533783217.

The spelling of 1545018420 in words is "one billion, five hundred forty-five million, eighteen thousand, four hundred twenty".