1029002491 has 16 divisors (see below), whose sum is σ = 1130899968. Its totient is φ = 928528000.

The previous prime is 1029002483. The next prime is 1029002509. The reversal of 1029002491 is 1942009201.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1029002491 - 2³ = 1029002483 is a prime.

It is a super-2 number, since 2×1029002491² = 2117692252968410162, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1029002411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1159650 + ... + 1160536.

It is an arithmetic number, because the mean of its divisors is an integer number (70681248).

Almost surely, 2^1029002491 is an apocalyptic number.

1029002491 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1029002491 is a deficient number, since it is larger than the sum of its proper divisors (101897477).

1029002491 is a wasteful number, since it uses less digits than its factorization.

1029002491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1562.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 1029002491 is about 32078.0686918649. The cubic root of 1029002491 is about 1009.5755138730.

The spelling of 1029002491 in words is "one billion, twenty-nine million, two thousand, four hundred ninety-one".