1153421503 has 32 divisors (see below), whose sum is σ = 1329914880. Its totient is φ = 992217600.

The previous prime is 1153421459. The next prime is 1153421509. The reversal of 1153421503 is 3051243511.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1153421503 - 2¹⁷ = 1153290431 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 (1153421509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2663575 + ... + 2664007.

It is an arithmetic number, because the mean of its divisors is an integer number (41559840).

Almost surely, 2^1153421503 is an apocalyptic number.

1153421503 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1153421503 is a deficient number, since it is larger than the sum of its proper divisors (176493377).

1153421503 is a wasteful number, since it uses less digits than its factorization.

1153421503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 1153421503 is about 33962.0597579122. The cubic root of 1153421503 is about 1048.7275600558.

The spelling of 1153421503 in words is "one billion, one hundred fifty-three million, four hundred twenty-one thousand, five hundred three".