1891434496 has 204 divisors, whose sum is σ = 4781470080. Its totient is φ = 743178240.

The previous prime is 1891434481. The next prime is 1891434499. The reversal of 1891434496 is 6944341981.

It is a Harshad number since it is a multiple of its sum of digits (49).

Its product of digits (746496) is a multiple of the sum of its prime factors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1891434499) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61014001 + ... + 61014031.

Almost surely, 2^1891434496 is an apocalyptic number.

1891434496 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1891434496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2390735040).

1891434496 is an abundant number, since it is smaller than the sum of its proper divisors (2890035584).

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

1891434496 is an frugal number, since it uses more digits than its factorization.

1891434496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96 (or 59 counting only the distinct ones).

The product of its digits is 746496, while the sum is 49.

The square root of 1891434496 is about 43490.6253806496. The cubic root of 1891434496 is about 1236.6983133391.

The spelling of 1891434496 in words is "one billion, eight hundred ninety-one million, four hundred thirty-four thousand, four hundred ninety-six".