1201667654 has 32 divisors (see below), whose sum is σ = 2077747200. Its totient is φ = 515492640.

The previous prime is 1201667639. The next prime is 1201667671. The reversal of 1201667654 is 4567661021.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107099 + ... + 117785.

It is an arithmetic number, because the mean of its divisors is an integer number (64929600).

Almost surely, 2^1201667654 is an apocalyptic number.

1201667654 is a deficient number, since it is larger than the sum of its proper divisors (876079546).

1201667654 is a wasteful number, since it uses less digits than its factorization.

1201667654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10988.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 1201667654 is about 34665.0783065609. The cubic root of 1201667654 is about 1063.1506043277.

The spelling of 1201667654 in words is "one billion, two hundred one million, six hundred sixty-seven thousand, six hundred fifty-four".