1994155092 has 48 divisors (see below), whose sum is σ = 5194593600. Its totient is φ = 661560480.

The previous prime is 1994155081. The next prime is 1994155123. The reversal of 1994155092 is 2905514991.

1994155092 is a `hidden beast` number, since 1 + 9 + 9 + 4 + 1 + 550 + 92 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20967 + ... + 66542.

It is an arithmetic number, because the mean of its divisors is an integer number (108220700).

Almost surely, 2^1994155092 is an apocalyptic number.

1994155092 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1994155092 is an abundant number, since it is smaller than the sum of its proper divisors (3200438508).

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

1994155092 is a wasteful number, since it uses less digits than its factorization.

1994155092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87733 (or 87725 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 45.

The square root of 1994155092 is about 44655.9636778785. The cubic root of 1994155092 is about 1258.6924985509.

The spelling of 1994155092 in words is "one billion, nine hundred ninety-four million, one hundred fifty-five thousand, ninety-two".