1545641632 has 48 divisors (see below), whose sum is σ = 3241933632. Its totient is φ = 722856960.

The previous prime is 1545641627. The next prime is 1545641651. The reversal of 1545641632 is 2361465451.

It is a junction number, because it is equal to n+sod(n) for n = 1545641591 and 1545641600.

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, 79957 + ... + 97387.

It is an arithmetic number, because the mean of its divisors is an integer number (67540284).

Almost surely, 2^1545641632 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1545641632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1620966816).

1545641632 is an abundant number, since it is smaller than the sum of its proper divisors (1696292000).

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

1545641632 is a wasteful number, since it uses less digits than its factorization.

1545641632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17621 (or 17613 counting only the distinct ones).

The product of its digits is 86400, while the sum is 37.

The square root of 1545641632 is about 39314.6490763939. The cubic root of 1545641632 is about 1156.2087959916.

The spelling of 1545641632 in words is "one billion, five hundred forty-five million, six hundred forty-one thousand, six hundred thirty-two".