538640454 has 24 divisors (see below), whose sum is σ = 1184120280. Its totient is φ = 163224160.

The previous prime is 538640449. The next prime is 538640477. The reversal of 538640454 is 454046835.

It is a super-2 number, since 2×538640454² = 580267077370652232, which contains 22 as substring.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 370239 + ... + 371690.

It is an arithmetic number, because the mean of its divisors is an integer number (49338345).

Almost surely, 2^538640454 is an apocalyptic number.

538640454 is an abundant number, since it is smaller than the sum of its proper divisors (645479826).

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

538640454 is a wasteful number, since it uses less digits than its factorization.

538640454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741956 (or 741945 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 39.

The square root of 538640454 is about 23208.6288694528. The cubic root of 538640454 is about 813.6413077542.

The spelling of 538640454 in words is "five hundred thirty-eight million, six hundred forty thousand, four hundred fifty-four".