19672403 has 2 divisors, whose sum is σ = 19672404. Its totient is φ = 19672402.

The previous prime is 19672399. The next prime is 19672441. The reversal of 19672403 is 30427691.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19672403 - 2² = 19672399 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19672403.

It is not a weakly prime, because it can be changed into another prime (19672483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9836201 + 9836202.

It is an arithmetic number, because the mean of its divisors is an integer number (9836202).

Almost surely, 2^19672403 is an apocalyptic number.

19672403 is a deficient number, since it is larger than the sum of its proper divisors (1).

19672403 is an equidigital number, since it uses as much as digits as its factorization.

19672403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 19672403 is about 4435.3582718874. The cubic root of 19672403 is about 269.9515367978.

The spelling of 19672403 in words is "nineteen million, six hundred seventy-two thousand, four hundred three".