1993551468 has 48 divisors (see below), whose sum is σ = 4680879840. Its totient is φ = 660352000.

The previous prime is 1993551463. The next prime is 1993551493. The reversal of 1993551468 is 8641553991.

It is a self number, because there is not a number n which added to its sum of digits gives 1993551468.

It is not an unprimeable number, because it can be changed into a prime (1993551463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2262388 + ... + 2263268.

It is an arithmetic number, because the mean of its divisors is an integer number (97518330).

Almost surely, 2^1993551468 is an apocalyptic number.

It is an amenable number.

1993551468 is an abundant number, since it is smaller than the sum of its proper divisors (2687328372).

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

1993551468 is a wasteful number, since it uses less digits than its factorization.

1993551468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1858 (or 1856 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 51.

The square root of 1993551468 is about 44649.2045617836. The cubic root of 1993551468 is about 1258.5654850808.

The spelling of 1993551468 in words is "one billion, nine hundred ninety-three million, five hundred fifty-one thousand, four hundred sixty-eight".