1949178330 has 224 divisors, whose sum is σ = 5817208320. Its totient is φ = 466093440.

The previous prime is 1949178317. The next prime is 1949178337. The reversal of 1949178330 is 338719491.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1949178337) by changing a digit.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 8740599 + ... + 8740821.

It is an arithmetic number, because the mean of its divisors is an integer number (25969680).

Almost surely, 2^1949178330 is an apocalyptic number.

1949178330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1949178330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2908604160).

1949178330 is an abundant number, since it is smaller than the sum of its proper divisors (3868029990).

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

1949178330 is a wasteful number, since it uses less digits than its factorization.

1949178330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368 (or 353 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 1949178330 is about 44149.4997706656. The cubic root of 1949178330 is about 1249.1574759835.

The spelling of 1949178330 in words is "one billion, nine hundred forty-nine million, one hundred seventy-eight thousand, three hundred thirty".