1904729349 has 8 divisors (see below), whose sum is σ = 2546449312. Its totient is φ = 1266414480.

The previous prime is 1904729341. The next prime is 1904729353. The reversal of 1904729349 is 9439274091.

It is a happy number.

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

It is not a de Polignac number, because 1904729349 - 2³ = 1904729341 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1904729298 and 1904729307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1904729341) 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, 849967 + ... + 852204.

It is an arithmetic number, because the mean of its divisors is an integer number (318306164).

Almost surely, 2^1904729349 is an apocalyptic number.

It is an amenable number.

1904729349 is a deficient number, since it is larger than the sum of its proper divisors (641719963).

1904729349 is a wasteful number, since it uses less digits than its factorization.

1904729349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1702547.

The product of its (nonzero) digits is 489888, while the sum is 48.

The square root of 1904729349 is about 43643.2050724967. The cubic root of 1904729349 is about 1239.5891261422.

The spelling of 1904729349 in words is "one billion, nine hundred four million, seven hundred twenty-nine thousand, three hundred forty-nine".