1491842436 has 36 divisors (see below), whose sum is σ = 4049288208. Its totient is φ = 426240528.

The previous prime is 1491842393. The next prime is 1491842483. The reversal of 1491842436 is 6342481941.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1267986 + ... + 1269161.

It is an arithmetic number, because the mean of its divisors is an integer number (112480228).

Almost surely, 2^1491842436 is an apocalyptic number.

It is an amenable number.

1491842436 is an abundant number, since it is smaller than the sum of its proper divisors (2557445772).

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

1491842436 is a wasteful number, since it uses less digits than its factorization.

1491842436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2537168 (or 2537159 counting only the distinct ones).

The product of its digits is 165888, while the sum is 42.

The square root of 1491842436 is about 38624.3761891373. The cubic root of 1491842436 is about 1142.6353405483.

The spelling of 1491842436 in words is "one billion, four hundred ninety-one million, eight hundred forty-two thousand, four hundred thirty-six".