190490747 has 4 divisors (see below), whose sum is σ = 192376896. Its totient is φ = 188604600.

The previous prime is 190490719. The next prime is 190490771. The reversal of 190490747 is 747094091.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 747094091 = 15187 ⋅49193.

It is a cyclic number.

It is not a de Polignac number, because 190490747 - 2⁶ = 190490683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190490717) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 942923 + ... + 943124.

It is an arithmetic number, because the mean of its divisors is an integer number (48094224).

Almost surely, 2^190490747 is an apocalyptic number.

190490747 is a deficient number, since it is larger than the sum of its proper divisors (1886149).

190490747 is a wasteful number, since it uses less digits than its factorization.

190490747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1886148.

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 190490747 is about 13801.8385369486. The cubic root of 190490747 is about 575.3842392082.

The spelling of 190490747 in words is "one hundred ninety million, four hundred ninety thousand, seven hundred forty-seven".