109951919 has 16 divisors (see below), whose sum is σ = 138082560. Its totient is φ = 85052160.

The previous prime is 109951913. The next prime is 109951921. The reversal of 109951919 is 919159901.

It is a cyclic number.

It is not a de Polignac number, because 109951919 - 2¹⁶ = 109886383 is a prime.

It is a super-2 number, since 2×109951919² = 24178848983565122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 109951919.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109951913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5567 + ... + 15839.

It is an arithmetic number, because the mean of its divisors is an integer number (8630160).

Almost surely, 2^109951919 is an apocalyptic number.

109951919 is a deficient number, since it is larger than the sum of its proper divisors (28130641).

109951919 is a wasteful number, since it uses less digits than its factorization.

109951919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10430.

The product of its (nonzero) digits is 32805, while the sum is 44.

The square root of 109951919 is about 10485.7960594320. The cubic root of 109951919 is about 479.0721645450.

The spelling of 109951919 in words is "one hundred nine million, nine hundred fifty-one thousand, nine hundred nineteen".