1515135545 has 16 divisors (see below), whose sum is σ = 2266800768. Its totient is φ = 944499840.

The previous prime is 1515135541. The next prime is 1515135581. The reversal of 1515135545 is 5455315151.

It is not a de Polignac number, because 1515135545 - 2² = 1515135541 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1515135541) 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, 1967324 + ... + 1968093.

It is an arithmetic number, because the mean of its divisors is an integer number (141675048).

Almost surely, 2^1515135545 is an apocalyptic number.

It is an amenable number.

1515135545 is a deficient number, since it is larger than the sum of its proper divisors (751665223).

1515135545 is a wasteful number, since it uses less digits than its factorization.

1515135545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3935440.

The product of its digits is 37500, while the sum is 35.

The square root of 1515135545 is about 38924.7420672251. The cubic root of 1515135545 is about 1148.5515589168.

The spelling of 1515135545 in words is "one billion, five hundred fifteen million, one hundred thirty-five thousand, five hundred forty-five".