1801725394 has 48 divisors (see below), whose sum is σ = 3291342336. Its totient is φ = 736646400.

The previous prime is 1801725389. The next prime is 1801725437. The reversal of 1801725394 is 4935271081.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

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, 211522 + ... + 219874.

It is an arithmetic number, because the mean of its divisors is an integer number (68569632).

Almost surely, 2^1801725394 is an apocalyptic number.

1801725394 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1801725394 is a deficient number, since it is larger than the sum of its proper divisors (1489616942).

1801725394 is a wasteful number, since it uses less digits than its factorization.

1801725394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8471 (or 8464 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 1801725394 is about 42446.7359640291. The cubic root of 1801725394 is about 1216.8289488753.

The spelling of 1801725394 in words is "one billion, eight hundred one million, seven hundred twenty-five thousand, three hundred ninety-four".