1009640356 has 6 divisors (see below), whose sum is σ = 1766870630. Its totient is φ = 504820176.

The previous prime is 1009640329. The next prime is 1009640381. The reversal of 1009640356 is 6530469001.

It can be written as a sum of positive squares in only one way, i.e., 1006158400 + 3481956 = 31720^2 + 1866^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126205041 + ... + 126205048.

Almost surely, 2^1009640356 is an apocalyptic number.

It is an amenable number.

1009640356 is a deficient number, since it is larger than the sum of its proper divisors (757230274).

1009640356 is a wasteful number, since it uses less digits than its factorization.

1009640356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252410093 (or 252410091 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 1009640356 is about 31774.8384102894. The cubic root of 1009640356 is about 1003.2031806783.

The spelling of 1009640356 in words is "one billion, nine million, six hundred forty thousand, three hundred fifty-six".