1670390553 has 32 divisors (see below), whose sum is σ = 2462487552. Its totient is φ = 1000627200.

The previous prime is 1670390551. The next prime is 1670390569. The reversal of 1670390553 is 3550930761.

It is not a de Polignac number, because 1670390553 - 2¹ = 1670390551 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (1670390551) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 969733 + ... + 971453.

It is an arithmetic number, because the mean of its divisors is an integer number (76952736).

Almost surely, 2^1670390553 is an apocalyptic number.

1670390553 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1670390553 is a deficient number, since it is larger than the sum of its proper divisors (792096999).

1670390553 is a wasteful number, since it uses less digits than its factorization.

1670390553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2385.

The product of its (nonzero) digits is 85050, while the sum is 39.

The square root of 1670390553 is about 40870.4117057805. The cubic root of 1670390553 is about 1186.5134757414.

The spelling of 1670390553 in words is "one billion, six hundred seventy million, three hundred ninety thousand, five hundred fifty-three".