1949759394 has 48 divisors (see below), whose sum is σ = 4317307680. Its totient is φ = 586585560.

The previous prime is 1949759377. The next prime is 1949759411. The reversal of 1949759394 is 4939579491.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1949759377) and next prime (1949759411).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14026977 + ... + 14027115.

It is an arithmetic number, because the mean of its divisors is an integer number (89943910).

Almost surely, 2^1949759394 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1949759394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2158653840).

1949759394 is an abundant number, since it is smaller than the sum of its proper divisors (2367548286).

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

1949759394 is an frugal number, since it uses more digits than its factorization.

1949759394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444 (or 155 counting only the distinct ones).

The product of its digits is 11022480, while the sum is 60.

The square root of 1949759394 is about 44156.0799211162. The cubic root of 1949759394 is about 1249.2815912435.

The spelling of 1949759394 in words is "one billion, nine hundred forty-nine million, seven hundred fifty-nine thousand, three hundred ninety-four".