1000749690 has 48 divisors (see below), whose sum is σ = 2691678600. Its totient is φ = 257663616.

The previous prime is 1000749677. The next prime is 1000749691. The reversal of 1000749690 is 969470001.

It can be written as a sum of positive squares in 4 ways, for example, as 916091289 + 84658401 = 30267^2 + 9201^2 .

It is a super-2 number, since 2×1000749690² = 2002999884070192200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1000749691) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 189105 + ... + 194324.

Almost surely, 2^1000749690 is an apocalyptic number.

1000749690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1000749690 is an abundant number, since it is smaller than the sum of its proper divisors (1690928910).

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

1000749690 is a wasteful number, since it uses less digits than its factorization.

1000749690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383471 (or 383468 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 1000749690 is about 31634.6280205726. The cubic root of 1000749690 is about 1000.2498342443.

The spelling of 1000749690 in words is "one billion, seven hundred forty-nine thousand, six hundred ninety".