19090947 has 16 divisors (see below), whose sum is σ = 26544128. Its totient is φ = 12191040.

The previous prime is 19090937. The next prime is 19090957. The reversal of 19090947 is 74909091.

It is an interprime number because it is at equal distance from previous prime (19090937) and next prime (19090957).

It is not a de Polignac number, because 19090947 - 2⁴ = 19090931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19090937) 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, 8583 + ... + 10575.

It is an arithmetic number, because the mean of its divisors is an integer number (1659008).

Almost surely, 2^19090947 is an apocalyptic number.

19090947 is a deficient number, since it is larger than the sum of its proper divisors (7453181).

19090947 is a wasteful number, since it uses less digits than its factorization.

19090947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2130.

The product of its (nonzero) digits is 20412, while the sum is 39.

The square root of 19090947 is about 4369.3188256295. The cubic root of 19090947 is about 267.2652472149.

The spelling of 19090947 in words is "nineteen million, ninety thousand, nine hundred forty-seven".