19113956 has 6 divisors (see below), whose sum is σ = 33449430. Its totient is φ = 9556976.

The previous prime is 19113937. The next prime is 19113959. The reversal of 19113956 is 65931191.

It can be written as a sum of positive squares in only one way, i.e., 17977600 + 1136356 = 4240^2 + 1066^2 .

It is not an unprimeable number, because it can be changed into a prime (19113959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2389241 + ... + 2389248.

It is an arithmetic number, because the mean of its divisors is an integer number (5574905).

Almost surely, 2^19113956 is an apocalyptic number.

It is an amenable number.

19113956 is a deficient number, since it is larger than the sum of its proper divisors (14335474).

19113956 is a wasteful number, since it uses less digits than its factorization.

19113956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4778493 (or 4778491 counting only the distinct ones).

The product of its digits is 7290, while the sum is 35.

The square root of 19113956 is about 4371.9510518760. The cubic root of 19113956 is about 267.3725762228.

The spelling of 19113956 in words is "nineteen million, one hundred thirteen thousand, nine hundred fifty-six".