19316145 has 8 divisors (see below), whose sum is σ = 30905856. Its totient is φ = 10301936.

The previous prime is 19316137. The next prime is 19316147. The reversal of 19316145 is 54161391.

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

It is a cyclic number.

It is not a de Polignac number, because 19316145 - 2³ = 19316137 is a prime.

It is a super-2 number, since 2×19316145² = 746226915322050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19316147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 643857 + ... + 643886.

It is an arithmetic number, because the mean of its divisors is an integer number (3863232).

Almost surely, 2^19316145 is an apocalyptic number.

19316145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19316145 is a deficient number, since it is larger than the sum of its proper divisors (11589711).

19316145 is a wasteful number, since it uses less digits than its factorization.

19316145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1287751.

The product of its digits is 3240, while the sum is 30.

The square root of 19316145 is about 4395.0136518559. The cubic root of 19316145 is about 268.3120344535.

The spelling of 19316145 in words is "nineteen million, three hundred sixteen thousand, one hundred forty-five".