1994357400 has 96 divisors (see below), whose sum is σ = 7065738240. Its totient is φ = 455852160.

The previous prime is 1994357389. The next prime is 1994357423. The reversal of 1994357400 is 47534991.

It is a super-2 number, since 2×1994357400² = 7954922877869520000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 233224 + ... + 241623.

It is an arithmetic number, because the mean of its divisors is an integer number (73601440).

Almost surely, 2^1994357400 is an apocalyptic number.

1994357400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1994357400 is an abundant number, since it is smaller than the sum of its proper divisors (5071380840).

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

1994357400 is a wasteful number, since it uses less digits than its factorization.

1994357400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474873 (or 474864 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 1994357400 is about 44658.2288050030. The cubic root of 1994357400 is about 1258.7350620995.

The spelling of 1994357400 in words is "one billion, nine hundred ninety-four million, three hundred fifty-seven thousand, four hundred".