1994182740 has 240 divisors, whose sum is σ = 6972666624. Its totient is φ = 472953600.

The previous prime is 1994182727. The next prime is 1994182759. The reversal of 1994182740 is 472814991.

It is a happy number.

1994182740 is a `hidden beast` number, since 199 + 418 + 2 + 7 + 40 = 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 79 ways as a sum of consecutive naturals, for example, 836350 + ... + 838730.

Almost surely, 2^1994182740 is an apocalyptic number.

1994182740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1994182740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3486333312).

1994182740 is an abundant number, since it is smaller than the sum of its proper divisors (4978483884).

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

1994182740 is a wasteful number, since it uses less digits than its factorization.

1994182740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2460 (or 2449 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 1994182740 is about 44656.2732435209. The cubic root of 1994182740 is about 1258.6983155791.

The spelling of 1994182740 in words is "one billion, nine hundred ninety-four million, one hundred eighty-two thousand, seven hundred forty".