1047780345 has 16 divisors (see below), whose sum is σ = 1679008320. Its totient is φ = 557962944.

The previous prime is 1047780343. The next prime is 1047780401. The reversal of 1047780345 is 5430877401.

It is not a de Polignac number, because 1047780345 - 2¹ = 1047780343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1047780343) 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, 43114 + ... + 62883.

It is an arithmetic number, because the mean of its divisors is an integer number (104938020).

Almost surely, 2^1047780345 is an apocalyptic number.

1047780345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1047780345 is a deficient number, since it is larger than the sum of its proper divisors (631227975).

1047780345 is a wasteful number, since it uses less digits than its factorization.

1047780345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106664.

The product of its (nonzero) digits is 94080, while the sum is 39.

The square root of 1047780345 is about 32369.4353518871. The cubic root of 1047780345 is about 1015.6796454322.

The spelling of 1047780345 in words is "one billion, forty-seven million, seven hundred eighty thousand, three hundred forty-five".