1949722236 has 288 divisors, whose sum is σ = 6544032768. Its totient is φ = 474439680.

The previous prime is 1949722219. The next prime is 1949722249. The reversal of 1949722236 is 6322279491.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1949722191 and 1949722200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3378780 + ... + 3379356.

It is an arithmetic number, because the mean of its divisors is an integer number (22722336).

Almost surely, 2^1949722236 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1949722236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3272016384).

1949722236 is an abundant number, since it is smaller than the sum of its proper divisors (4594310532).

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

1949722236 is a wasteful number, since it uses less digits than its factorization.

1949722236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681 (or 676 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 1949722236 is about 44155.6591616522. The cubic root of 1949722236 is about 1249.2736550335.

The spelling of 1949722236 in words is "one billion, nine hundred forty-nine million, seven hundred twenty-two thousand, two hundred thirty-six".