1073840691 has 32 divisors (see below), whose sum is σ = 1811755008. Its totient is φ = 549505440.

The previous prime is 1073840687. The next prime is 1073840699. The reversal of 1073840691 is 1960483701.

It is not a de Polignac number, because 1073840691 - 2² = 1073840687 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1073840699) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19215 + ... + 50168.

It is an arithmetic number, because the mean of its divisors is an integer number (56617344).

Almost surely, 2^1073840691 is an apocalyptic number.

1073840691 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1073840691 is a deficient number, since it is larger than the sum of its proper divisors (737914317).

1073840691 is a wasteful number, since it uses less digits than its factorization.

1073840691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69471.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 1073840691 is about 32769.5085559732. The cubic root of 1073840691 is about 1024.0314280083.

The spelling of 1073840691 in words is "one billion, seventy-three million, eight hundred forty thousand, six hundred ninety-one".