1491021887034 has 16 divisors (see below), whose sum is σ = 2982056807520. Its totient is φ = 497005123440.

The previous prime is 1491021887011. The next prime is 1491021887057. The reversal of 1491021887034 is 4307881201941.

It is an interprime number because it is at equal distance from previous prime (1491021887011) and next prime (1491021887057).

It is a super-2 number, since 2×1491021887034² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1586529 + ... + 2345019.

It is an arithmetic number, because the mean of its divisors is an integer number (186378550470).

Almost surely, 2^{1491021887034} is an apocalyptic number.

1491021887034 is an abundant number, since it is smaller than the sum of its proper divisors (1491034920486).

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

1491021887034 is a wasteful number, since it uses less digits than its factorization.

1491021887034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1086125.

The product of its (nonzero) digits is 387072, while the sum is 48.

The spelling of 1491021887034 in words is "one trillion, four hundred ninety-one billion, twenty-one million, eight hundred eighty-seven thousand, thirty-four".