7978462945 has 8 divisors (see below), whose sum is σ = 9576236736. Its totient is φ = 6381382896.

The previous prime is 7978462889. The next prime is 7978462969. The reversal of 7978462945 is 5492648797.

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 7978462945 - 2¹⁷ = 7978331873 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147787 + ... + 194416.

It is an arithmetic number, because the mean of its divisors is an integer number (1197029592).

Almost surely, 2^7978462945 is an apocalyptic number.

It is an amenable number.

7978462945 is a deficient number, since it is larger than the sum of its proper divisors (1597773791).

7978462945 is a wasteful number, since it uses less digits than its factorization.

7978462945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346871.

The product of its digits is 30481920, while the sum is 61.

The square root of 7978462945 is about 89322.2421628566. The cubic root of 7978462945 is about 1998.2036324315.

The spelling of 7978462945 in words is "seven billion, nine hundred seventy-eight million, four hundred sixty-two thousand, nine hundred forty-five".