1973852145 has 80 divisors (see below), whose sum is σ = 3746160000. Its totient is φ = 991533312.

The previous prime is 1973852137. The next prime is 1973852149. The reversal of 1973852145 is 5412583791.

1973852145 is a `hidden beast` number, since 1 + 97 + 38 + 521 + 4 + 5 = 666.

It is not a de Polignac number, because 1973852145 - 2³ = 1973852137 is a prime.

It is a super-2 number, since 2×1973852145² = 7792184580642202050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1973852145.

It is not an unprimeable number, because it can be changed into a prime (1973852149) 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 79 ways as a sum of consecutive naturals, for example, 1530661 + ... + 1531949.

It is an arithmetic number, because the mean of its divisors is an integer number (46827000).

Almost surely, 2^1973852145 is an apocalyptic number.

1973852145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1973852145 is a deficient number, since it is larger than the sum of its proper divisors (1772307855).

1973852145 is a wasteful number, since it uses less digits than its factorization.

1973852145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1524 (or 1515 counting only the distinct ones).

The product of its digits is 302400, while the sum is 45.

The square root of 1973852145 is about 44428.0558318727. The cubic root of 1973852145 is about 1254.4062407175.

The spelling of 1973852145 in words is "one billion, nine hundred seventy-three million, eight hundred fifty-two thousand, one hundred forty-five".