1194894921 has 32 divisors (see below), whose sum is σ = 1756800000. Its totient is φ = 716402880.

The previous prime is 1194894913. The next prime is 1194894923. The reversal of 1194894921 is 1294984911.

It is not a de Polignac number, because 1194894921 - 2³ = 1194894913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1194894923) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2394330 + ... + 2394828.

It is an arithmetic number, because the mean of its divisors is an integer number (54900000).

Almost surely, 2^1194894921 is an apocalyptic number.

1194894921 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1194894921 is a deficient number, since it is larger than the sum of its proper divisors (561905079).

1194894921 is a wasteful number, since it uses less digits than its factorization.

1194894921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149.

The product of its digits is 186624, while the sum is 48.

The square root of 1194894921 is about 34567.2521470828. The cubic root of 1194894921 is about 1061.1494949639.

The spelling of 1194894921 in words is "one billion, one hundred ninety-four million, eight hundred ninety-four thousand, nine hundred twenty-one".