1301661634 has 32 divisors (see below), whose sum is σ = 2425562496. Its totient is φ = 510122880.

The previous prime is 1301661631. The next prime is 1301661703. The reversal of 1301661634 is 4361661031.

It is a junction number, because it is equal to n+sod(n) for n = 1301661596 and 1301661605.

It is not an unprimeable number, because it can be changed into a prime (1301661631) 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, 13947 + ... + 52894.

It is an arithmetic number, because the mean of its divisors is an integer number (75798828).

Almost surely, 2^1301661634 is an apocalyptic number.

1301661634 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1301661634 is a deficient number, since it is larger than the sum of its proper divisors (1123900862).

1301661634 is a wasteful number, since it uses less digits than its factorization.

1301661634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66970.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 1301661634 is about 36078.5481138030. The cubic root of 1301661634 is about 1091.8576839360.

The spelling of 1301661634 in words is "one billion, three hundred one million, six hundred sixty-one thousand, six hundred thirty-four".