1538348620 has 12 divisors (see below), whose sum is σ = 3230532144. Its totient is φ = 615339440.

The previous prime is 1538348597. The next prime is 1538348627. The reversal of 1538348620 is 268438351.

It is not an unprimeable number, because it can be changed into a prime (1538348627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38458696 + ... + 38458735.

It is an arithmetic number, because the mean of its divisors is an integer number (269211012).

Almost surely, 2^1538348620 is an apocalyptic number.

1538348620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1538348620 is an abundant number, since it is smaller than the sum of its proper divisors (1692183524).

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

1538348620 is a wasteful number, since it uses less digits than its factorization.

1538348620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76917440 (or 76917438 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 1538348620 is about 39221.7875676262. The cubic root of 1538348620 is about 1154.3874290242.

The spelling of 1538348620 in words is "one billion, five hundred thirty-eight million, three hundred forty-eight thousand, six hundred twenty".