1994148892 has 48 divisors (see below), whose sum is σ = 3834498528. Its totient is φ = 903536640.

The previous prime is 1994148887. The next prime is 1994148899. The reversal of 1994148892 is 2988414991.

It is a happy number.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1994148899) 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, 239967 + ... + 248137.

It is an arithmetic number, because the mean of its divisors is an integer number (79885386).

Almost surely, 2^1994148892 is an apocalyptic number.

It is an amenable number.

1994148892 is a deficient number, since it is larger than the sum of its proper divisors (1840349636).

1994148892 is a wasteful number, since it uses less digits than its factorization.

1994148892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8326 (or 8324 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 55.

The square root of 1994148892 is about 44655.8942582052. The cubic root of 1994148892 is about 1258.6911940884.

The spelling of 1994148892 in words is "one billion, nine hundred ninety-four million, one hundred forty-eight thousand, eight hundred ninety-two".