1011512945 has 8 divisors (see below), whose sum is σ = 1215707136. Its totient is φ = 807949296.

The previous prime is 1011512941. The next prime is 1011512959. The reversal of 1011512945 is 5492151101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1011512945 - 2² = 1011512941 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011512941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154097 + ... + 160526.

It is an arithmetic number, because the mean of its divisors is an integer number (151963392).

Almost surely, 2^1011512945 is an apocalyptic number.

It is an amenable number.

1011512945 is a deficient number, since it is larger than the sum of its proper divisors (204194191).

1011512945 is an equidigital number, since it uses as much as digits as its factorization.

1011512945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315271.

The product of its (nonzero) digits is 1800, while the sum is 29.

The square root of 1011512945 is about 31804.2912985025. The cubic root of 1011512945 is about 1003.8230142702.

The spelling of 1011512945 in words is "one billion, eleven million, five hundred twelve thousand, nine hundred forty-five".