19397002 has 4 divisors (see below), whose sum is σ = 29095506. Its totient is φ = 9698500.

The previous prime is 19396973. The next prime is 19397003. The reversal of 19397002 is 20079391.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20079391 = 23 ⋅873017.

It can be written as a sum of positive squares in only one way, i.e., 14508481 + 4888521 = 3809^2 + 2211^2 .

It is not an unprimeable number, because it can be changed into a prime (19397003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4849249 + ... + 4849252.

Almost surely, 2^19397002 is an apocalyptic number.

19397002 is a deficient number, since it is larger than the sum of its proper divisors (9698504).

19397002 is an equidigital number, since it uses as much as digits as its factorization.

19397002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9698503.

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 19397002 is about 4404.2027655411. The cubic root of 19397002 is about 268.6858962306.

The spelling of 19397002 in words is "nineteen million, three hundred ninety-seven thousand, two".