1032649981 has 8 divisors (see below), whose sum is σ = 1185818400. Its totient is φ = 889363440.

The previous prime is 1032649963. The next prime is 1032649993. The reversal of 1032649981 is 1899462301.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1032649981 - 2¹⁷ = 1032518909 is a prime.

It is a super-2 number, since 2×1032649981² = 2132731966518600722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1032649931) 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, 2470246 + ... + 2470663.

It is an arithmetic number, because the mean of its divisors is an integer number (148227300).

Almost surely, 2^1032649981 is an apocalyptic number.

1032649981 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1032649981 is a deficient number, since it is larger than the sum of its proper divisors (153168419).

1032649981 is a wasteful number, since it uses less digits than its factorization.

1032649981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4940939.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 1032649981 is about 32134.8717283888. The cubic root of 1032649981 is about 1010.7669830122.

The spelling of 1032649981 in words is "one billion, thirty-two million, six hundred forty-nine thousand, nine hundred eighty-one".