1491772350 has 24 divisors (see below), whose sum is σ = 3699595800. Its totient is φ = 397805920.

The previous prime is 1491772349. The next prime is 1491772351. The reversal of 1491772350 is 532771941.

It is an interprime number because it is at equal distance from previous prime (1491772349) and next prime (1491772351).

It is a junction number, because it is equal to n+sod(n) for n = 1491772299 and 1491772308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1491772351) 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, 4972425 + ... + 4972724.

It is an arithmetic number, because the mean of its divisors is an integer number (154149825).

Almost surely, 2^1491772350 is an apocalyptic number.

1491772350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1491772350 is an abundant number, since it is smaller than the sum of its proper divisors (2207823450).

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

1491772350 is a wasteful number, since it uses less digits than its factorization.

1491772350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9945164 (or 9945159 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 39.

The square root of 1491772350 is about 38623.4689016924. The cubic root of 1491772350 is about 1142.6174467921.

The spelling of 1491772350 in words is "one billion, four hundred ninety-one million, seven hundred seventy-two thousand, three hundred fifty".