1001381764 has 24 divisors (see below), whose sum is σ = 1841647808. Its totient is φ = 475826400.

The previous prime is 1001381749. The next prime is 1001381789. The reversal of 1001381764 is 4671831001.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72312 + ... + 85039.

Almost surely, 2^1001381764 is an apocalyptic number.

It is an amenable number.

1001381764 is a deficient number, since it is larger than the sum of its proper divisors (840266044).

1001381764 is a wasteful number, since it uses less digits than its factorization.

1001381764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157435 (or 157433 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 1001381764 is about 31644.6166669783. The cubic root of 1001381764 is about 1000.4603760214.

The spelling of 1001381764 in words is "one billion, one million, three hundred eighty-one thousand, seven hundred sixty-four".