1922538394 has 16 divisors (see below), whose sum is σ = 3305232000. Its totient is φ = 821582064.

The previous prime is 1922538367. The next prime is 1922538407. The reversal of 1922538394 is 4938352291.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191854 + ... + 201625.

It is an arithmetic number, because the mean of its divisors is an integer number (206577000).

Almost surely, 2^1922538394 is an apocalyptic number.

1922538394 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1922538394 is a deficient number, since it is larger than the sum of its proper divisors (1382693606).

1922538394 is a wasteful number, since it uses less digits than its factorization.

1922538394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393837.

The product of its digits is 466560, while the sum is 46.

The square root of 1922538394 is about 43846.7603592329. The cubic root of 1922538394 is about 1243.4404959221.

The spelling of 1922538394 in words is "one billion, nine hundred twenty-two million, five hundred thirty-eight thousand, three hundred ninety-four".