19140297 has 16 divisors (see below), whose sum is σ = 28065792. Its totient is φ = 11506320.

The previous prime is 19140293. The next prime is 19140343. The reversal of 19140297 is 79204191.

It is not a de Polignac number, because 19140297 - 2² = 19140293 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (19140293) 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, 1908 + ... + 6474.

It is an arithmetic number, because the mean of its divisors is an integer number (1754112).

Almost surely, 2^19140297 is an apocalyptic number.

It is an amenable number.

19140297 is a deficient number, since it is larger than the sum of its proper divisors (8925495).

19140297 is a wasteful number, since it uses less digits than its factorization.

19140297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4708.

The product of its (nonzero) digits is 4536, while the sum is 33.

The square root of 19140297 is about 4374.9625141251. The cubic root of 19140297 is about 267.4953421613.

The spelling of 19140297 in words is "nineteen million, one hundred forty thousand, two hundred ninety-seven".