1000555749 has 12 divisors (see below), whose sum is σ = 1447202016. Its totient is φ = 666134952.

The previous prime is 1000555727. The next prime is 1000555753. The reversal of 1000555749 is 9475550001.

It is not a de Polignac number, because 1000555749 - 2¹² = 1000551653 is a prime.

It is a super-2 number, since 2×1000555749² = 2002223613713902002, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000555769) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68127 + ... + 81500.

It is an arithmetic number, because the mean of its divisors is an integer number (120600168).

Almost surely, 2^1000555749 is an apocalyptic number.

It is an amenable number.

1000555749 is a deficient number, since it is larger than the sum of its proper divisors (446646267).

1000555749 is a wasteful number, since it uses less digits than its factorization.

1000555749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150376 (or 150373 counting only the distinct ones).

The product of its (nonzero) digits is 31500, while the sum is 36.

The square root of 1000555749 is about 31631.5625443954. The cubic root of 1000555749 is about 1000.1852153598.

The spelling of 1000555749 in words is "one billion, five hundred fifty-five thousand, seven hundred forty-nine".