1535434149 has 4 divisors (see below), whose sum is σ = 2047245536. Its totient is φ = 1023622764.

The previous prime is 1535434139. The next prime is 1535434157. The reversal of 1535434149 is 9414345351.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9414345351 = 3 ⋅3138115117.

It is not a de Polignac number, because 1535434149 - 2¹² = 1535430053 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 (1535434139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255905689 + ... + 255905694.

It is an arithmetic number, because the mean of its divisors is an integer number (511811384).

Almost surely, 2^1535434149 is an apocalyptic number.

It is an amenable number.

1535434149 is a deficient number, since it is larger than the sum of its proper divisors (511811387).

1535434149 is an equidigital number, since it uses as much as digits as its factorization.

1535434149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511811386.

The product of its digits is 129600, while the sum is 39.

The square root of 1535434149 is about 39184.6162288212. The cubic root of 1535434149 is about 1153.6579551006.

The spelling of 1535434149 in words is "one billion, five hundred thirty-five million, four hundred thirty-four thousand, one hundred forty-nine".