1235148869 has 4 divisors (see below), whose sum is σ = 1246480620. Its totient is φ = 1223817120.

The previous prime is 1235148851. The next prime is 1235148877. The reversal of 1235148869 is 9688415321.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 442050625 + 793098244 = 21025^2 + 28162^2 .

It is not a de Polignac number, because 1235148869 - 2²⁸ = 966713413 is a prime.

It is a super-2 number, since 2×1235148869² = 3051185457183958322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1235148809) 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, 5665712 + ... + 5665929.

It is an arithmetic number, because the mean of its divisors is an integer number (311620155).

Almost surely, 2^1235148869 is an apocalyptic number.

It is an amenable number.

1235148869 is a deficient number, since it is larger than the sum of its proper divisors (11331751).

1235148869 is a wasteful number, since it uses less digits than its factorization.

1235148869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11331750.

The product of its digits is 414720, while the sum is 47.

The square root of 1235148869 is about 35144.6847901642. The cubic root of 1235148869 is about 1072.9342319692.

The spelling of 1235148869 in words is "one billion, two hundred thirty-five million, one hundred forty-eight thousand, eight hundred sixty-nine".