1993453560 has 96 divisors (see below), whose sum is σ = 7404265440. Its totient is φ = 455645952.

The previous prime is 1993453547. The next prime is 1993453589. The reversal of 1993453560 is 653543991.

1993453560 is a `hidden beast` number, since 1 + 9 + 9 + 34 + 53 + 560 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 393007 + ... + 398046.

It is an arithmetic number, because the mean of its divisors is an integer number (77127765).

Almost surely, 2^1993453560 is an apocalyptic number.

1993453560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1993453560 is an abundant number, since it is smaller than the sum of its proper divisors (5410811880).

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

1993453560 is a wasteful number, since it uses less digits than its factorization.

1993453560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 791077 (or 791070 counting only the distinct ones).

The product of its (nonzero) digits is 437400, while the sum is 45.

The square root of 1993453560 is about 44648.1081346119. The cubic root of 1993453560 is about 1258.5448810401.

The spelling of 1993453560 in words is "one billion, nine hundred ninety-three million, four hundred fifty-three thousand, five hundred sixty".