19145949 has 8 divisors (see below), whose sum is σ = 25776192. Its totient is φ = 12639840.

The previous prime is 19145933. The next prime is 19145953. The reversal of 19145949 is 94954191.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 19145949 - 2⁴ = 19145933 is a prime.

It is a super-2 number, since 2×19145949² = 733134726221202, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 19145949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19145969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30672 + ... + 31289.

It is an arithmetic number, because the mean of its divisors is an integer number (3222024).

Almost surely, 2^19145949 is an apocalyptic number.

It is an amenable number.

19145949 is a deficient number, since it is larger than the sum of its proper divisors (6630243).

19145949 is a wasteful number, since it uses less digits than its factorization.

19145949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62067.

The product of its digits is 58320, while the sum is 42.

The square root of 19145949 is about 4375.6084148379. The cubic root of 19145949 is about 267.5216694240.

The spelling of 19145949 in words is "nineteen million, one hundred forty-five thousand, nine hundred forty-nine".