190647378 has 16 divisors (see below), whose sum is σ = 423660960. Its totient is φ = 63549108.

The previous prime is 190647377. The next prime is 190647407. The reversal of 190647378 is 873746091.

It is not an unprimeable number, because it can be changed into a prime (190647371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1765200 + ... + 1765307.

It is an arithmetic number, because the mean of its divisors is an integer number (26478810).

Almost surely, 2^190647378 is an apocalyptic number.

190647378 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

190647378 is an abundant number, since it is smaller than the sum of its proper divisors (233013582).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

190647378 is a wasteful number, since it uses less digits than its factorization.

190647378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3530518 (or 3530512 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 190647378 is about 13807.5116512716. The cubic root of 190647378 is about 575.5418992175.

It can be divided in two parts, 1906 and 47378, that added together give a square (49284 = 222²).

The spelling of 190647378 in words is "one hundred ninety million, six hundred forty-seven thousand, three hundred seventy-eight".