18953077 has 12 divisors (see below), whose sum is σ = 22437100. Its totient is φ = 15903360.

The previous prime is 18953047. The next prime is 18953083. The reversal of 18953077 is 77035981.

It can be written as a sum of positive squares in 2 ways, for example, as 7623121 + 11329956 = 2761^2 + 3366^2 .

It is not a de Polignac number, because 18953077 - 2¹¹ = 18951029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18953047) 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, 4452 + ... + 7597.

Almost surely, 2^18953077 is an apocalyptic number.

It is an amenable number.

18953077 is a deficient number, since it is larger than the sum of its proper divisors (3484023).

18953077 is a wasteful number, since it uses less digits than its factorization.

18953077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12084 (or 12073 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 40.

The square root of 18953077 is about 4353.5131790314. The cubic root of 18953077 is about 266.6203181601.

The spelling of 18953077 in words is "eighteen million, nine hundred fifty-three thousand, seventy-seven".