190348989 has 16 divisors (see below), whose sum is σ = 267273600. Its totient is φ = 120263616.

The previous prime is 190348969. The next prime is 190348993. The reversal of 190348989 is 989843091.

It is a happy number.

It is not a de Polignac number, because 190348989 - 2¹³ = 190340797 is a prime.

It is a super-2 number, since 2×190348989² = 72465475226644242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190348909) 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, 5134 + ... + 20175.

It is an arithmetic number, because the mean of its divisors is an integer number (16704600).

Almost surely, 2^190348989 is an apocalyptic number.

It is an amenable number.

190348989 is a deficient number, since it is larger than the sum of its proper divisors (76924611).

190348989 is a wasteful number, since it uses less digits than its factorization.

190348989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25444.

The product of its (nonzero) digits is 559872, while the sum is 51.

The square root of 190348989 is about 13796.7021059382. The cubic root of 190348989 is about 575.2414753881.

The spelling of 190348989 in words is "one hundred ninety million, three hundred forty-eight thousand, nine hundred eighty-nine".