491129070 has 16 divisors (see below), whose sum is σ = 1178709840. Its totient is φ = 130967744.

The previous prime is 491129069. The next prime is 491129071. The reversal of 491129070 is 70921194.

It is an interprime number because it is at equal distance from previous prime (491129069) and next prime (491129071).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491129071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8185455 + ... + 8185514.

It is an arithmetic number, because the mean of its divisors is an integer number (73669365).

Almost surely, 2^491129070 is an apocalyptic number.

491129070 is an abundant number, since it is smaller than the sum of its proper divisors (687580770).

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

491129070 is a wasteful number, since it uses less digits than its factorization.

491129070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16370979.

The product of its (nonzero) digits is 4536, while the sum is 33.

The square root of 491129070 is about 22161.4320385665. The cubic root of 491129070 is about 788.9785816672.

The spelling of 491129070 in words is "four hundred ninety-one million, one hundred twenty-nine thousand, seventy".