1520753745 has 16 divisors (see below), whose sum is σ = 2780807040. Its totient is φ = 695201664.

The previous prime is 1520753743. The next prime is 1520753747. The reversal of 1520753745 is 5473570251.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1520753743) and next prime (1520753747).

It is not a de Polignac number, because 1520753745 - 2¹ = 1520753743 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1520753743) 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, 7241580 + ... + 7241789.

It is an arithmetic number, because the mean of its divisors is an integer number (173800440).

Almost surely, 2^1520753745 is an apocalyptic number.

1520753745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1520753745 is a deficient number, since it is larger than the sum of its proper divisors (1260053295).

1520753745 is a wasteful number, since it uses less digits than its factorization.

1520753745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14483384.

The product of its (nonzero) digits is 147000, while the sum is 39.

The square root of 1520753745 is about 38996.8427568181. The cubic root of 1520753745 is about 1149.9694371210.

The spelling of 1520753745 in words is "one billion, five hundred twenty million, seven hundred fifty-three thousand, seven hundred forty-five".