1001251662 has 16 divisors (see below), whose sum is σ = 2011250640. Its totient is φ = 332292672.

The previous prime is 1001251649. The next prime is 1001251681. The reversal of 1001251662 is 2661521001.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 362983 + ... + 365730.

It is an arithmetic number, because the mean of its divisors is an integer number (125703165).

Almost surely, 2^1001251662 is an apocalyptic number.

1001251662 is an abundant number, since it is smaller than the sum of its proper divisors (1009998978).

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

1001251662 is a wasteful number, since it uses less digits than its factorization.

1001251662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728947.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 1001251662 is about 31642.5609267012. The cubic root of 1001251662 is about 1000.4170467145.

Adding to 1001251662 its reverse (2661521001), we get a palindrome (3662772663).

The spelling of 1001251662 in words is "one billion, one million, two hundred fifty-one thousand, six hundred sixty-two".