1045755945 has 72 divisors (see below), whose sum is σ = 1975521600. Its totient is φ = 511505280.

The previous prime is 1045755941. The next prime is 1045756009. The reversal of 1045755945 is 5495575401.

It is a happy number.

1045755945 is a `hidden beast` number, since 1 + 0 + 4 + 57 + 5 + 594 + 5 = 666.

It is not a de Polignac number, because 1045755945 - 2² = 1045755941 is a prime.

It is a super-3 number, since 3×1045755945³ (a number of 28 digits) contains 333 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 1045755945.

It is not an unprimeable number, because it can be changed into a prime (1045755941) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1513050 + ... + 1513740.

It is an arithmetic number, because the mean of its divisors is an integer number (27437800).

Almost surely, 2^1045755945 is an apocalyptic number.

1045755945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1045755945 is a deficient number, since it is larger than the sum of its proper divisors (929765655).

1045755945 is a wasteful number, since it uses less digits than its factorization.

1045755945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 927 (or 911 counting only the distinct ones).

The product of its (nonzero) digits is 630000, while the sum is 45.

The square root of 1045755945 is about 32338.1499934675. The cubic root of 1045755945 is about 1015.0250974567.

The spelling of 1045755945 in words is "one billion, forty-five million, seven hundred fifty-five thousand, nine hundred forty-five".