100768949 has 4 divisors (see below), whose sum is σ = 100833036. Its totient is φ = 100704864.

The previous prime is 100768937. The next prime is 100768961. The reversal of 100768949 is 949867001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 949867001 = 31 ⋅30640871.

It is an interprime number because it is at equal distance from previous prime (100768937) and next prime (100768961).

It can be written as a sum of positive squares in 2 ways, for example, as 57866449 + 42902500 = 7607^2 + 6550^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100768949 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100768919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29624 + ... + 32849.

It is an arithmetic number, because the mean of its divisors is an integer number (25208259).

Almost surely, 2^100768949 is an apocalyptic number.

It is an amenable number.

100768949 is a deficient number, since it is larger than the sum of its proper divisors (64087).

100768949 is an equidigital number, since it uses as much as digits as its factorization.

100768949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64086.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 100768949 is about 10038.3738224874. The cubic root of 100768949 is about 465.3455619186.

The spelling of 100768949 in words is "one hundred million, seven hundred sixty-eight thousand, nine hundred forty-nine".