189415317 has 16 divisors (see below), whose sum is σ = 310835840. Its totient is φ = 99911232.

The previous prime is 189415297. The next prime is 189415339. The reversal of 189415317 is 713514981.

It is not a de Polignac number, because 189415317 - 2¹⁵ = 189382549 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189415357) 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, 346642 + ... + 347187.

It is an arithmetic number, because the mean of its divisors is an integer number (19427240).

Almost surely, 2^189415317 is an apocalyptic number.

It is an amenable number.

189415317 is a deficient number, since it is larger than the sum of its proper divisors (121420523).

189415317 is a wasteful number, since it uses less digits than its factorization.

189415317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693852.

The product of its digits is 30240, while the sum is 39.

The square root of 189415317 is about 13762.8237291626. The cubic root of 189415317 is about 574.2994033041.

The spelling of 189415317 in words is "one hundred eighty-nine million, four hundred fifteen thousand, three hundred seventeen".